Song Shi-on, a dance student disowned by his family, forms a romantic bond with debt collector Jin Hong-seok, but their relationship faces many obstacles.

Friendship evolves into something more between two high school students: a playful chaebol heir and the diligent bodyguard who's always by his side.

Raised like brothers, Haebom and Taesung start to feel something more as high school brings them closer than ever.

Jin-won cares about one thing only: running. When he finds himself in a slump, his coach suggests Sang-ha as a pacemaker. Though Sang-ha's efforts are initially ignored, they find themselves growing closer and closer over time.