 A Secret Service agent and his brother, a reckless ATF agent, try to stop a group of extreme right-wing U.S. military mercenaries, led by a fanatic Taiwanese vixen, who hijack the Queen Mary 2 ocean liner with the U.S. and Chinese presidents on board with the aim to steal China s nuclear codes to arm China s ICBM missiles to use as bargaining chips for their personal crusade against China.