A K-pop star, Sa-gye, reluctantly enters college, forms a 4-member mixed band, and navigates love and growth through music amid the chaos of campus life.
A drunken accident takes Sa-gye — the leader of a chart-topping band — from the stage to a university campus, where he meets the girl of his destiny.
Rumors abound as Sa-gye is recruiting for the school band. When a protest erupts demanding his expulsion, a mysterious figure comes to rescue him.
Tensions continue to sizzle between SAGYE and Tae-yang as the date of the school festival approaches. Bom plans a team-building trip for the band.
The festival is canceled due to a crowd, and the campus descends into chaos. The TWO SAGYE members search for Tae-yang as fans swarm Bom's house.
Bom and SAGYE grow briefly closer but drift apart when he suddenly disappears. Tae-yang aims to fill the absence, and Bom must make a choice.
The Crown's newest release is a carbon copy of Bom's song. SAGYE prevents her from seeking immediate justice, and the two try to devise a plan.
Tae-yang joins The Crown. TWO SAGYE jumps to the top of the charts with its cover song. In an inevitable turn of events, the two become rivals.
SAGYE wants to focus on Bom but is bothered about Tae-yang. He visits Director Seo to shake his feelings, but it brings about a new misunderstanding.
The fissure between Tae-yang and TWO SAGYE grows deeper. As Bom and Tae-yang reach the point of no return, SAGYE pitches in with confusing words.
Finally, the truth comes out. SAGYE, Bom and Tae-yang go off on their separate ways, hurting. The pain of breaking up hits like the chill of winter.
