Seong-mi, a psychiatrist who counsels troubled couples on a TV program, offers others solutions to save their marriages while her own relationship quietly falls apart. Meanwhile, tensions between Jeong-han and Dong-ik reach a boiling point, and Jeong-han shocks the family with an unexpected announcement.

Seong-mi is devastated when her husband, Jeong-han, suddenly blurts out in front of the family that they are getting a divorce. Ju-ah and Hyun-bin keep crossing paths in unexpected ways, while Hyun-bin's return to Korea quietly stirs old tensions between Dong-ik and Se-ri.

Ju-ah runs into Hyun-bin again and realizes he is the new executive director. Jeong-han decides to run for president of the Merchants' Association to protect the market, but his wife Seong-mi fiercely objects, determined to protect her own career. Meanwhile, Se-ri stacks the deck to secure her husband Dong-ik's election.

With Jeong-han at a disadvantage in the election race because of the false rumor about her having an affair, Seong-mi announces her full support to help him win fairly. Meanwhile, Dong-ik scrambles to cover for Se-ri, and Hyun-bin uncovers who was behind the home shopping incident.

Ju-ah and Hyun-bin recognize each other, but the memories that surface only leave them more conflicted. As the Merchants' Association presidential election draws near, tensions rise and the campaign turns fierce. The two families clash head-on, each determined to claim victory. With rallies growing more heated, the long-awaited election finally

Dae-han is lost and devastated after Hui-gyeong leaves and desperately tries to track her down. At the workshop, Ju-ah and Hyun-bin cannot stop bickering but grow closer in the process. Meanwhile, Dong-ik has no choice but to swallow his pride to secure the vice president position in the Merchants' Association.

Seon-hae urges Dae-han to get a divorce, while tensions mount between Jeong-han and Dong-ik over the Merchants' Association. Hoping to help her husband gain the upper hand, Se-ri searches for evidence that could turn things in his favor. Meanwhile at the workshop, Ju-ah and Hyun-bin come face to face with memories of their first love.

Seong-mi, a psychiatrist who counsels troubled couples on a TV program, offers others solutions to save their marriages while her own relationship quietly falls apart. Meanwhile, tensions between Jeong-han and Dong-ik reach a boiling point, and Jeong-han shocks the family with an unexpected announcement.

Reeling from Yong-gil's betrayal, Dong-suk swallows her anger and makes a hard choice to protect her family. Se-ri moves to rebuild Dong-ik's public image and urges him to soften his edges and appear more likeable. Meanwhile, Seong-mi walks a tightrope between the two families, increasingly anxious that the secret about the affairs will not stay hidden forever.

Hui-gyeong's affair with Yong-gil is exposed, igniting a bitter clash between the two families as years of pent-up resentment finally erupt. Old wounds resurface, pushing Seon-hae and Seon-chul to confront and put an end to the families' long-standing entanglement. Meanwhile, Ju-ah and Hyun-bin are left conflicted as they come face to face with their feelings for each other.

Hyun-bin abruptly begins distancing himself from Ju-ah, leaving her confused and hurt by his sudden coldness. As she tries to make sense of his change in attitude, Ju-ah finds herself struggling with a swirl of conflicting emotions she can't easily untangle. Meanwhile, when Jeong-han asks Seong-mi if their family can really afford to move, she reassures him and asks him to simply trust her, only to realize that reality isn't as easy as she expected.

Ju-ah and Hyun-bin experience a conflict during a meeting, prompting Ju-ah to decide to go on a blind date. Meanwhile, Dong-ik secretly devises a plan to stop Jeong-han's family from moving out, driven by his desire to appear on television. Meanwhile, Dong-suk goes to check out a store property but ends up in an unfortunate situation.

After a night of heavy drinking, Dae-han and Dong-suk end up spending the night together and are left to deal with the complicated aftermath. Elsewhere, Jun-hyeok and Hye-su play matchmaker, rooting for Ju-ah and Hyun-bin. Meanwhile, Jeong-han turns down the TV show offer, but Dong-ik secretly pulls strings behind the scenes to change his mind. When Se-ri discovers what Dong-ik has been doing behind her back, she feels deeply betrayed.

Amid growing confusion, Dae-han and Dong-suk are forced to confront their true feelings for each other. Dong-ik and his family are left reeling when Se-ri suddenly walks out after discovering he had kept his plan hidden from her. Meanwhile, Ju-ah and Hyun-bin begin secretly dating and hatch a plan to help their parents reconcile.

Ju-ah tries to keep her coworkers from finding out that Seong0mi is her mother, while Hyun-bin works to win points with Seong-mi. Dong-ik apologises to Jeong-han and tries to patch things up with him, but it doesn't go as well as he expected. Meanwhile, Dae-han and Dong-suk have no choice but to confront their mixed feelings as they go through the process of preparing their divorce papers.

The parents butt heads again at the golf event, and Jeong-han's errant swing sends his ball flying, accidentally hurting Se-ri. Meanwhile, Dae-han and Dong-suk spend the day together in unexpected harmony, marking their divorces with a strangely celebratory outing as a new kind of companionship begins to quietly take shape.

Dong-ik and Se-ri plan to use the video of Se-ri's fall to blackmail Jeong Han into appearing on the show, but things take an unexpected turn, leading Hyun-bin to step in and settle matters to help Ju-ah. Meanwhile, Dae-han finds himself at odds with Dong-suk while helping her check out store spaces, and the two end up getting into an argument.

Se-ri appears as a witness at Ju-ah's disciplinary hearing, while Jeong-han finally agrees to appear on Human Theater with Dong-ik. As Jeong-han and Dong-ik reconcile and grow closer, Dae-han can't help but feel left out. Meanwhile, Dong-suk tries to keep her distance, only to be caught off guard when Dae-han unexpectedly invites her to a teahouse.

Seon-hae suggests a blind date to Dae-han, hoping it will help him meet someone new and move on. Seon-chul runs into Min-seo at the restaurant Dong-suk is considering taking over. Meanwhile, Ju-ah heads to Hyun-bin's place to cook him an Argentinian meal, while Se-ri also makes her way there to drop off food for him.

Jeong-han's family is deeply grateful to Dong-ik after the altercation with the robber. Ju-ah wrestles with whether to reveal what Se-ri did, knowing it could shatter the fragile peace between the two families. Meanwhile, Dae-han finally gathers the courage to tell Dong-suk how he truly feels.

Dae-han officially asks Dong-suk out and tells his mother he is seeing someone with a child. Hyun Bin and Ju Ah grow closer, but tension rises when Jeong-han discovers Ju-ah tried to hide that Se-ri and Dong-ik deceived him and his family. As everything begins to unravel, Se-ri tries to cover it up instead of taking responsibility.

After Jeong-han declares his friendship with Dong-ik is over, the two are left to navigate awkward interactions as they must work together on the show. Dae-han tries to repair their relationship, knowing that Dong-suk is hesitant to commit because of the tension between their families. Meanwhile, Seong-mi invites Jun-hyeok over for a meal, stirring jealousy in Hyun-bin.

As suspicions grow among Ju-ah's coworkers that she and Jun-hyeok may be seeing each other, Ju-ah admits she is in a relationship. Jeong-han tells Dae-han to stop playing spy between him and Dong-ik, while Seon-chul and Seon-hae head to Seongdam together in search of Gi-cheol, Seon-hae's husband.

Seong-mi is enraged upon discovering that Se-ri orchestrated the entire stunt and insists she will never reconcile with the Yang family again. As tensions between the two families escalate, Dae-han attempts to reconcile Jeong-han and Dong-ik for the sake of his relationship with Dong-suk, only to end up hurt in the process.

Jeong-han and Dong-ik appear to have made up on the surface, praising each other during the filming of "Human Theater," but a tense undercurrent still lingers between them. Ju-ah and Hyun-bin quietly grow their relationship, with Seon-hae and Seon-chul acting as their allies. Meanwhile, Dae-han and Dong-suk begin dating in secret, cautiously stepping into a fragile yet determined promise for their future.

Seon-hae is shocked to discover Ju-ah's relationship and confronts Hyun-bin, pressuring him to end it before their families find out. Eun-bin feels betrayed, believing Min-seo intentionally approached both her and her family with an agenda. Meanwhile, Jeong-han and Dong-ik travel to Seongdam together in search of their father and mother, where they unexpectedly come face to face with Mi-hyang.

Se-ri chooses her current life and family, leaving Min-seo devastated to learn that her birth mother does not wish to meet her. As Eun-bin grapples with the truth about Se-ri and Min-seo while trying to hide it from her family, Jeong-han and Dae-han encounter a witness in their search for their father.

Dong-ik suggests Se-ri officially adopt Hyun-bin and Eun-bin to strengthen their family bond. The idea makes Se-ri happy but also anxious, as she fears the past she has hidden from the family may come to light. Meanwhile, Dong-suk struggles in her relationship with Dae-han over their differing views on having children.

Min-seo learns that Se-ri is her birth mother and is left shaken. Hyun-bin tries to mend the rift between Se-ri and Seong-mi, but his efforts fall short. Meanwhile, Dae-han suggests a trip to Dong-suk, and Jeong-han is contacted by someone totally unexpected.

Seong-mi and Jeong-han patch things up ahead of her surgery, while Dong-ik begins to suspect that Se-ri is hiding something from him. Meanwhile, Hui-gyeong makes an unexpected return, claiming that she is pregnant and determined to win Dae-han back.

The fashion show comes to a successful close, but Ju-ah learns about Seong-mi's breast cancer. As the date of her surgery approaches, Seong-mi becomes increasingly anxious and overwhelmed. Meanwhile, after spotting Se-ri with Hyeon-cheol, Dong-ik begins looking into her past and uncovers the secret she has been hiding from him.

As Seong-mi's post-surgery pain persists, her family grows increasingly worried. Hyun-bin and Ju-ah ultimately decide to part ways, choosing family obligations and reality over their relationship. Meanwhile, Dong-ik's discovery of Se-ri's past and her hidden child leaves him deeply shaken, creating a rift between them.

Ju-ah begins gaining recognition as a designer as new opportunities come her way, while Hyun-bin quietly prepares for his departure. Meanwhile, Dong-ik decides to reveal Se-ri's hidden past to the family, and Jeong-han is shocked to discover Dae-han and Dong-suk's relationship, strongly opposing their romance.

Ju-ah decides to quit her job, believing she will never be able to move on if she keeps running into Hyun-bin. Se-ri feels deeply betrayed after discovering that Dong-ik hired a private investigator to dig into her past and even uncover Min-seo's existence, leading her to declare that they should separate. Meanwhile, despite his family's opposition, Dae-han finds himself unable to give up on Dong-suk.

As his family stands against him, Dae-han quietly hands Dong-suk a bucket list that may change everything. Hyun-bin reels when he discovers Ju-ah submitted her resignation because of him, while Se-ri chooses herself after Eun-bin and Min-seo urge her to live differently. Seon-chul faces his sins, and In-ok's disappearance from 30 years ago breaks open at last.

When the truth behind a thirty-year-old elopement finally comes to light, Seon-hae and Seon-chul are consumed by devastating guilt. Meanwhile, Hyun-bin bravely confronts Director Baek, and Jeong-han begins to suspect that his father did not disappear by choice.

Dae-han and Dong-suk finally win both families' approval, but peace slips away as Se-ri uncovers Ju-ah and Hyun-bin's past romance. While Seong-mi helps Dong-ik through counselling and tries to mend what is broken, Se-ri reads her kindness as betrayal. Under Mi-hyang's watch, Gi-cheol's memories begin to stir, and every secret moves closer to daylight.

Dae-han and Dong-suk face the practical question of where married life can begin, but their meeting spirals when Se-ri speaks out and Ju-ah exposes what everyone hoped to hide. Jun-hyeok follows Hyun-bin's undercover order inside Taehan Group, only to waver when Director Baek reaches for him. As Seon-hae links Gi-cheol's trail to Mi-hyang, doubt becomes her only weapon.

Seong-mi stands between Jeong-han, Dong-ik, and Se-ri as a painful first love misunderstanding finally comes into focus. Jun-hyeok reels when Director Baek reveals he is the Taehan Group Chairman's illegitimate son, then cautiously tests Hye-su, while Jeong-han and Dae-han follow a decisive trace of Mi-hyang in Seongdam, where one truth waits.

Ju-ah and Hyun-bin meet again as new business partners, forcing old emotions into a room full of fresh stakes. While Dong-suk and Dae-han prepare for the future with a family photo, Dong-ik and Se-ri search for a way back to each other. Meanwhile, Mi-hyang's betrayal stuns Seon-hae's family and Gi-cheol makes his move.

Park Jun-hyeok's decision with Director Baek pushes the Fashion Division toward a sale and cuts deep into Hyun-bin and Hye-su. As Seon-hae's family and the police search harder for Mi-hyang, Dae-han and Dong-suk make their marriage official and celebrate at a hotel. At last, Gi-cheol comes home with his sons, but the past refuses to stay buried.

Dae-han and Dong-suk begin their newlywed life after a hotel stay, while Hyun-bin and Ju-ah’s new brand trip leads them to a country inn. When Mi-hyang reappears in Onjeong while wanted by police, Gi-cheol follows the pull of a lost past, leaving Seon-hae stunned by what refuses to stay buried. The past still knows the way home.

As Mi-hyang flees, Seon-hae's family is plunged into shock and Gi-cheol sinks under the weight of guilt. With no answer to the sample room problem, Hyun-bin entrusts the task to Ju-ah, just as Director Baek moves his Onjeong landmark scheme forward. But when Seon-chul catches Hyun-bin and Ju-ah alone, marriage becomes the pressure point no one can ignore.

Se-ri senses something is wrong with Seon-chul's health, yet she clings to Hyun-bin's marriage problem and clashes with Seong-mi over his bond with Ju-ah. As Hyun-bin and Ju-ah trade barbs while growing protective, he shields her from Mi-hyang's attack. Gi-cheol offers himself as bait to save the family, drawing everyone toward a trap with no safe exit.

Seon-chul insists there is no time left and pushes Hyun-bin toward marriage before anyone is ready. As Officer Jeong proposes to Nurse Jin-ah, a call sends him after Mi-hyang when she appears before Gi-cheol. Meanwhile, Dong-ik faces Councillor Hwang's demand to trade Onjeong Market for a nomination, and every choice feels like betrayal.

Hyun-bin convenes the board with a plan he has sharpened in secret, while Mi-hyang's arrest fails to free either family from thirty years of false rumours and buried wounds. As Jeong-han turns toward market redevelopment, a call from the hospital pushes Seon-chul to demand that Gi-cheol answer for both households. What begins as a strategy may reopen everything.

Dong-ik's poll hopes sink, and Hyun-bin's proposal turns into Seon-chul's final wish. With Jeong-han at his side, Dong-ik launches an independent run for city council, only to be shaken by a brutal poll that exposes how little support he has. As Hyun-bin lays out a heartfelt marriage plan for Ju-ah, she saves Seon-chul after he collapses in the street, leading Hyun-bin to the hospital and to a wish no one is ready to face.

Ju-ah and Hyun-bin choose marriage after confirming their love again, refusing to delay what their hearts already know. Se-ri, certain that Ju-ah has taken Hyun-bin from her, corners Ju-ah and crashes into Seong-mi with raw fury. As Seon-chul rejects a double-in-law marriage, Gi-cheol stands with the lovers and names his condition, and love comes with a price.

Seong-mi worries over Ju-ah and Hyun-bin, but Seon-hae urges her to decide from Ju-ah's point of view. Honouring Seon-chul's wish, Dong-ik stays in the election as Jeong-han helps his support rise. Meanwhile, Dae-han prepares for a baby, unaware of the truth, until a sudden call breaks the fragile calm.

Joy turns to terror when Seon-chul collapses moments after the wedding and learns that survival may depend on a transplant. With every family member ruled out as a match, Dong-suk clings to her father's wish for a grandchild, while Dae-han and Jeong-han throw themselves into Dong-ik's city council race. At last, Seong-mi faces the lights again, and all eyes turn to what comes next.