A former assassin, Xiao Yu, is forced to accept a mission to recover three pieces of source code in order to save his family, but must go rogue to save the fate of mankind.

A large corporation led by Mick, a megalomaniac CEO, announces to the world a miraculous microchip that will benefit mankind. The press conference is interrupted by Enoch, a former associate, working with a resistance group determined to stop Mick from executing his real plan, which is to control the world by implanting his microchip in people. Feeling threatened, Mick enlists the help of Xiao Yu, an elite assassin he had captured and imprisoned many years ago. When Xiao Yu refuses to help him, Mick kidnaps his wife and daughter to pressure him. To save his family, Xiao Yu is forced to accept a mission to recover three pieces of source code that were stolen by the resistance, and return them to Mick to complete his plan. During the mission, Xiao Yu meets Ye Yan, a reporter investigating the shadowy corporation. The fate of mankind rests in their hands.