Seventeen-year-old Qiao Xiaoxiao is carefree and heartless. She has a wise saying in life: life is short, enjoy yourself while you can. Seventeen-year-old Zhou Baisu refuses to accept anyone's submission when he fights hard, and pursues a motto: the fist is the biggest. Then, the two of them got together inexplicably, and the two of them broke up again inexplicably... Many years later, when Zhou Baisu met Qiao Xiao again, at the corner of the toilet, Qiao Xiao pushed Zhou Baisu against the wall with one hand, smelling of wine, and lightly stroked his Adam's apple with the other hand: "Hey, you look like what I like..."