Freddie, a motor mechanic, rescues a baby, and twenty years later he offers to become responsible for him - Tony - when he is put on probation for petty theft. Tony abuses his kindness by involving Freddie's two adolescent children in a bank robbery, in which he panics and kills the cashier. With his associate, Spud, and the children, Harry and Monica, he makes for London.

A boy and girl find true love for each other and escape from boredom and crime.