The American girl band Rainbow Rose arrives at the Master program with a splash. The quartet quickly mixes with STARISH and creates waves in the world of music. But within the dorms of the Master Program there's another girl who's making her own kind of impact: a manager who seems to be good at everything, but at the same time STARISH and Quartet Night wonder if it really is the same girl doing it all. When a huge opportunity shows up only one person can make it work, but what if that one person was actually seven?