During China's National Day holiday, Su Nian stays behind alone to work overtime. Meanwhile, her boss, Feng Qishan, secretly meets a female colleague at a hotel. When his wife, Tang Man, arrives to catch him cheating, Su Nian is framed, as her colleagues try to pin the mistress's shame on her. Carrying memories of her previous life, when she was subjected to online abuse that ultimately led to her parents' tragic deaths, Su Nian is reborn and immediately fights back. Carefully planning her moves, she exposes her colleagues' lies and uses hotel key cards and hallway surveillance footage to prove Feng Qishan's affair. In the end, with the boss's wife's support, Su Nian obtains the compensation she was owed, protects her career, and finally finds a peaceful life.