Criminal mastermind Dodger Lane is a "model inmate" living a life of luxury in Huntleigh Prison until he and his cellmates hatch a plan for the perfect robbery. Now all they have to do is escape from jail, steal a sultan's diamonds from a military convoy and break back into prison before their release next morning. But even with the help of a phony vicar, Dodger's buxom fiance and one felonius mum, will the perfect alibi be enough to pull off the perfect crime?