After pulling off a train robbery by tricking the train into stopping with false signal lights, 'Little Walter' and his gang are forced to hide out on a remote
Cornish island in a monastery (which they buy with their "ill-gotten gains"), disguised as monks. With them comes 'Bikini', Walter's girlfriend, who is given the job of cook to the group, despite never having cooked in her life. After a few initial setbacks, they slowly adjust to their new contemplative life of tending animals and crops, surviving the added tribulations of visits by a group of tourists and two of the real monks who had been forced to sell the monastery after falling on hard times, including Brother Lucius. Gradually, the gang adjusts to its new pastoral life, which turns out to be much to their liking. A return to a life in the city is less appealing by the day. With the help of Phineas, a fisherman, they continue to receive and dispose of stolen goods. The crooks change and are kinder and gentler, but 'Brother' Squirts begins to place bets on the dogs and the police become suspicious. When Walter decides it is safe to leave, none of them want to go, including Willy, who has fallen for June, Phineas's granddaughter; these two manage to get away safely together. Walter gives the deeds of the island to the real monks who had originally owned it, and just as the rest of the gang say goodbye, they see the police waiting for them. ==Cast==