Both crooks, on the pleading of the girl, determine to turn square but with the provision of turning just one more trick. The first could not foresee that the second had placed a time bomb in the safe when he went to rob it. Likewise, the second could not foresee the other was going to pay a visit to the booty after he had planted the explosive. But worse, neither could foresee that a gang of burglars were contemplating carrying off the safe and that there were police loitering nearby.