To save on rent, Janet Wood and Chrissy Snow invite Jack Tripper to be their roommate. There's one catch -- he must pretend to be gay in order for the landlords, the Ropers, to approve.
Chrissy's mom comes for an overnight visit. The problem is Chrissy hasn't told her about their new roommate, Jack.
Mr. Roper's niece is in town, and he gives Jack $50 to take her out. Roper figures she'll be safe with Jack, who figures he'll be in easy money--that is until he meets her.
Mr. Roper has a "no kids, no dogs" policy, so the trio's in a bit of a pinch when they take in a homeless puppy found by Jack's buddy, Larry.
Jack's got something to prove after not standing up to a bully who made a pass at Chrissy at the Regale Beagle.
Panic's afoot when the rent money goes missing and the trio can't find anyone to float them a loan so they can pay Roper.