The supermarket (Phelps) is to be sold by its new co-owner, Tommy Rogers, with the permission of Martha Phelps, the widow who inherited the store. The current manager is against all this, because countless postscripts and fraud with account books will come out into the light. He orchestrates an attempt on Tommys life that fails. Martha hires the worlds worst detective, Wolf Jay Flywell, as Tommys bodyguard. This is where the whole (cheese-boron) and complete confusion, arranged by the Marx brothers, begins.