In a city of street life and ambition, a rising musician and his circle face mounting pressure as their public personas conflict with private struggles.

A-He, who has intellectual disability, always hangs out with bad students. Class leader Jie volunteers to be A-He's tutor. She keeps persuading A-He to study hard and be a decent person, but she sets him up in the end.

獨自在台北度過假期的永寧格外寂寞，久未見面的麻吉以傑突然來電，邀約趁著開學前外出鬼混。午夜遊蕩在街頭的兩位男孩踩著節拍，跳的是戀曲還是徒勞？