Private eyes Morton & Hayes are hired by a rich woman who suspects her husband is having an affair.
The lads are stranded in a Bavarian village when they are invited to stay at a mad doctor's castle.
Waiters Eddie and Chick are mistaken for society guests at a gala party and win the affection of the rich, homely hostesses.
Forced to walk the plant, stowaways Chick and Eddie wind up as human sacrifices on a mysterious island.
The lads are inexplicably left in charge of an antique vase shop.
While their overbearing wives visit their mothers, Chick and Eddie win millions in a radio contest.