Rex Weasel, owner of the Vermination Pest Control Company, has returned home from holiday unexpectedly and without his wife. Hoping to lay low, his plans are rudely interrupted when one of his employees, Vic Maggot and his wife, Charmaine, drop in to check on the apartment. They're not even supposed to be there as Vic is filling in for another of Rex's employees. To complicate matters further, the Weasels' estranged son, Rocky shows up with his girlfriend, Melanie-Jane.