Dong-ho is ranked number 1 in "Arena," an illegal gambling league for teens, but he steps down to prepare for college. However, the members of "Arena" don't want to lose their biggest money-maker, so they place a debt on his brother Dong-min. Dong-min literally fights against his debt, but when he gets hurt, Dong-ho decides to fight back.

On the edge of town, in a dilapidated former public bathhouse, two young artists share a precarious roof, a common dream, and the constant fear of disappearing. By repainting the cracked tiles of this borrowed space, they attempt to rebuild much more than a physical place: an identity, a future, and a sense of belonging. Their daily lives become a poignant exploration of what it means to have—and lose—a place of one's own.