A new generation of spy satellite crashes down to earth in downtown LA. The FBI tells Amy that the only missing piece is extremely radioactive. If it is opened it could irradiate half the city. Involved in the bringing down of the satellite are the criminal cult Scorpio and their mysterious leader 'The One'. FBI agent Wick insists that Sammo and Grace are not to be allowed to participate in the case because they are both Chinese nationals and are probably Chinese spies. While this is going on Sammo is also trying to track down the whereabouts of his son, Lone Wei.
