After Summer, Summerville University's all boys band composed of Deimos, Kayden, Xavier and Rigel is facing a big problem. The organizers of the Summer Talent Camp they're on requires all participants to have atleast one girl vocalist. Meanwhile, Cyllene, a member of the Elite Emerald and a fan of After Summer, will meet Kayden in the most unexpected way. Will their passion for music let their heart beat as one?