Guy Hubble, whose first assignment as royal bodyguard is to investigate an assassination plot against a member of the royal family.

A routine shopping trip in London turns dangerous after a misunderstanding between Hubble and another member of royal security.

Guy Hubble's plans to protect the royal family are thrown into confusion when he is kidnapped by his old nemesis.

Hubble is sent to investigate a burglary at Buckingham Palace but the evidence points to him as one of the thieves.