Two gay men living in St. Tropez have their lives turned upside down when the son of one of the men announces he is getting married. They try to conceal their lifestyle and their ownership of the transvestite club downstairs when the fiancée and her parents come for dinner.

In a move to make his partner, Renato, jealous, the flamboyant Albin waits in a local cafe - dressed as a woman - hoping to be picked up. But Albin gets more than he bargains for when the fly he catches in his web is actually a spy, who uses him as an unwitting courier of secret microfilm. Now on the run from ruthless agents, Albin and Renato flee to Italy where they attempt to hide out on a farm, with Albin posing as Renato's wife. Can Albin escape the deadly pursuit of these relentless spies or does he have to sustain this charade - as a woman - forever?

Third and final version of the La Cage aux Folles series has Renato's drag queen lover Albin learning that he can inherit a vast fortune from a distant relative. But the catch is that Albin must marry (a woman) and produce a heir within a year or the whole inheritance will be forfeited.