Mr. Ups likes the gay life and Mr. Downs is a "stay-at-home." One night when Ups is out sporting and Downs is home in bed, Ups arrives at the entrance of the apartment house at the same time with Downs' wife. Ups' wife, who is at home, hears the cat ransacking the milk cans in the kitchen and thinks a burglar is in the house. Then Mr. Ups and Mrs. Downs arrive and the chase starts. Up and down the dumbwaiter goes Downs and Mrs. Ups, looking for the burglar, one in his bathrobe the other in her pajamas. The mystery is solved and the two couples become the best of friends.