Philip is going through a messy divorce. To make himself some money and give his life a boost of adrenalin, he devises a cunning scheme to rob the London department store Jarvis and Klein of its daily takings. He needs help, however, so he enlists John, an ex-stationery salesman sacked for fiddling his expenses, and Dave, another salesman with a hugely expensive lifestyle, as his partners in crime. The plot seems to be going well - until John and Dave's wives join forces to investigate their husbands' odd behaviour.