Nineteen-year-old girl An Ran is deeply in love with Che Jiu, but Che Jiu has always been obsessed with her, so An Ran chooses to leave and becomes more and more depraved. Along the way, she smokes, drinks, becomes a thief, has an abortion, and is a bar singer. Dian You, her boyfriend who lives with her, loves An Ran, but An Ran only loves Che Jiu, but Dian You still stays with her all the way and never leaves her. Ruoyu loves Dianyou deeply and is Anran's good friend. She accompanies Anran to do whatever Anran wants to do, and even breaks her legs after being raped for Anran on a rainy night. Che Jiu finally found An Ran long after An Ran left, but how could An Ran look back at this time? Will An Ran leave Dianyou and Che Jiu behind? Can Dianyou accept the kind and brave Ruoyu? What kind of ending will Enron give to everything?