Do-hoe, a high schooler disillusioned by his father's violent Taekwondo gym, forms a bond with Ju-young, but their connection is strained by family pressure. Ten years later, they reunite.
Despite Do-hoe's cold demeanor, the lively Ju-young shows his warmth and kindness.
Ju-young eases the tension between Do-hoe and his father, and the two boys' relationship takes a turn for the better.
Ju-young clashes with Do-hoe's father, and the two youths are forced to separate.
A tragedy accidentally reunites Ju-young and Do-hoe, but Do-hoe is less than friendly to Ju-young.
Do-hoe is interested in disposing of his family's taekwondo gym, and he and Ju-young have a chance to get things off their chest.
Ju-young and Do-hoe get into a verbal argument. Meanwhile, Do-hoe gets involved in a student's problem.
A secret is revealed when Do Hoe finds old report cards in a glove compartment.
Do Hoe and Hyeon Ho finally open up; Do Hoe starts preparing for exams with Ju Yeong supporting him.
