A team of Hong Kong police join CI5 in London to help crack a local heroin supply and protection racket. It's down to Bodie and Doyle to expose a scheme to smuggle drugs to the US by teams of Triads and European agents.

A hitman is employed by a group of East German officials to assassinate a reporter who is planning to publish a report in which their new fighter plane is branded as a potential death-trap.

Silver bullion is being shipped into Britain via the Iron Curtain, only for it to be hijacked by one of the group's own officials.

A young woman from a rich and successful family turns terrorist, shunning her wealthy background and the British Justice system which she now views as being corrupt. Important legal establishments located around London are targeted by the terrorist groups, who are planting several bombs at key points around the city.