Growing up in an abusive home, Ye Zi found comfort in music. Ostracized by the other neighborhood kids, his only childhood friend Gao Hang was a source of goodness and light. Years later, after a misunderstanding, Gao Hang leaves Ye Zi behind for university. Ye Zi’s only option now is to pick up the pieces and start again—to become stronger on his own. But when they suddenly run into each other once again, Gao Hang seems cold. All Ye Zi wants is for their friendship to be like it was before. Can they return to the blissful dynamic of their youth?