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 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 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.