Kai (Jack Yao), who works at his parent's noodle shop by day and spends his nights in a bookstore to learn French, decides to go to Paris after his girlfriend, who recently left for Paris, dumps him by phone. Then the local neighborhood mafia boss offers Kai a free plane ticket to Paris if he takes a mysterious package with him.

Set four years after the first movie, Lin Xiao, Lily, Nan Xiang, and Ruby, confront opportunities and challenges as their school days come to an end.

Lin Xiao, Gu Li, Nan Xiang, Tang Wanru - these four best friends, after waving goodbye to their school campus and entering the workforce, they are faced with various challenges in their life: friendship, love, and career. Together, they become lost in life, having long forgotten their past courage.

In the film series finale, Lily finds herself near financial ruin because of the debts left behind by her father, all while battling a newly diagnosed cancer. Too proud to seek solace from anyone around her, Lily sets off a chain of self-destructive events that lead to her estrangement from best friends Lin Xiao, Nan Xiang, and Ruby.