Vintage British comedy about a bunch of on-the-run petty crooks who take to the cloth in an attempt to lay low. After pulling off a small train robbery, 'Little Walter' (Ronald Fraser) and his gang hide out, disguised as monks, in an abandoned monastery on a remote Cornish island. As they warm to their new way of life, a return to the big city begins to lose its attraction for the gang members. Their idyllic lifestyle soon becomes threatened, however, when one of their number, 'Squirts' McGinty (Bernard Cribbins), starts placing bets on the dogs, causing the local police to become a mite suspicious...