After saving the Queen's life in an apparent act of bravery, ex-Guardsman Guy Hubble is brought out of retirement and put in charge of Royal security. However, he turns out to be the worst possible choice as he is totally out of his depth.
Hubble's first assignment as 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.
Hubble's plans to protect the Royal Family are thrown into confusion when he's 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.
Because MI-5 can't be trusted to ferret out a leak in Downing Street 10, Hubble is sent in.
Hubble is assigned to escort a royal princess to a hen night at a Devon hotel, where he annoys the guests and loses his charge, ending up being stuck on the moors all night.