Do-hyun, captain of the basketball team, is preparing for the championship when team manager Hye In brings in Dong-wook, his first love, to replace an injured player. They reconnect after years apart, having shared a past history in high school. After a bet made during a match, Dong-wook wins and suggests they live together. Though hesitant, Do-hyun agrees, and as they spend time together, they begin to rebuild their relationship.
