It is set in Santa Monica, California, in a small apartment shared by 3 roommates. Two of them are girls, but the third one is a guy. In order to convince the landlord to let him stay, Jack Tripper fakes being gay and therefore promises nothing's going on between him and his roomies.
But he's always going out on dates with girls, so it launches quiproquos and misunderstandings with the landlords.
Share the complicated but hilarious life of Jack Tripper (John Ritter), Janet Wood (Joyce DeWitt) and their third roommate (who changes through the seasons). Meet their penny-pinching friend Larry (Richard Kline) and their landlords Mr and Mrs Roper, then Ralph Furley (Don Knotts).