When a sightseeing Soviet commander runs his submarine aground off the New England coast, his crew attempts to find a boat to dislodge the sub almost starts World War III. Russian Lt. Rozanov and his crew hit the beaches of Massachusetts unaware of the panic they're about to start. Despite the Russians' harmless intentions, the folks in town think a full-scale Soviet invasion has been launched! What's worse, their police chief has left his hysterical assistant in charge.