In the second season, the high school goes into financial bankruptcy and is taken over by Oz Entertainment. The company transfers its young idols-in-training to satisfy a new law that requires underage entertainers to receive twenty hours per week of education and prohibits working past ten in the evening.
As the idol-in-training teens clash with the current students, rivalries erupt as well as secret crushes and unexpected alliances.
Shin Hae Sung dreamsof a career in music, although she only knows it through books rather than actually performing it. Jin Yoo Jin, a former child star, flouts school rules and is constantly getting into trouble in his quest to become a hard-core rock star. He also butts heads with JB, a member of the famous group I:dn. JB’s ex-girlfriend Rian—who is a member of the famous K-pop group Hershe—wants him back, but he starts to develop a crush on Hae Sung. Nanahas what it takes to become a top vocalist. Who can achieve the ultimate stardom?