Over the course of several decades, a deal between the Japanese army and criminals in Shanghai plays out with violence and betrayal.

Seven years after the apparent death of Chen Zhen, who was shot after discovering who was responsible for his teacher's death (Huo Yuanjia) in Japanese-occupied Shanghai. A mysterious stranger arrives from overseas and befriends a local mafia boss. That man is a disguised Chen Zhen, who intends to infiltrate the mob when they form an alliance with the Japanese. Disguising himself as a caped fighter by night, Chen intends to take out everyone involved as well as get his hands on an assassination list prepared by the Japanese.

Seven friends get together for dinner, and decided to play a game where they must share all messages and calls of their cell phones. Throughout the evening, wechat messages, phone calls and APP notifications are coming out continuously. Hilarity and drama ensue together as everyone's secrets are unveiled and the seven friends find themselves more like strangers to each other.