Jang Hye-seong is thrust back to 2008, where he reunites with his high school first love, Lee Woo-jin, at age 18.

Hye-sung fails to avoid Woo-jin as basketball tutoring reignites their bond, but a touch triggers his color loss.

Hye Seong’s time-travel fails, leading him to help an injured U Jin with art as penance for a sports accident.

U Jin finds Hye Seong’s secret sketches, shattering his cold act and finally exposing their hidden feelings.

U Jin’s anxiety peaks as Hye Seong vanishes for days to attempt a risky time-travel to rewrite the past.

A sweet reunion for Hye Seong and U Jin is threatened by the looming, fatal side effects of time travel.

Hye Seong begins to question if fate is fixed as he works tirelessly to shield U Jin from a dangerous future. 

Hye Seong suddenly returns to the year 2026. Will his love with U Jin—and the intertwined fate between past and present—be rewritten once again?