Neil Burnside, the Director of Operations for Britain's Secret Intelligence Service, objects to sending his best agents, the Sandbaggers, on a mission into Russia for Norway's Secret Service.

Alan Denson threatens to quit the Sandbaggers after a rough, unauthorized mission near the Soviet border, so Burnside applies pressure to Denson's fiancee

Sandbagger One Willie Caine goes to Gibraltar to investigate the murder of an SIS agent, and potential new Sandbagger Laura Dickens goes to Morocco to get more clues in the case.

Dickens is assigned to find out where an Arab sheik's sympathies lie while Burnside clashes with Deputy Chief Matthew Peele and the Ministry of Defence over a covert scuba-diving operation.

Caine and an agent fresh out of field school go to Cyprus on the trail of some missing rocket scientists while Neil lets his romantic guard down at home.

Laura Dickens is the most qualified agent for a risky mission in East Berlin and Burnside has to double-deal to make sure her presence there won't pose other security risks as well.