Mister Darnétal is invited by his nephew Georges to the premiere of his extravaganza in Paris;but his partner (he did not marry her,even after all those years)is not prepared to accept it and he uses his best friend as an alibi ;the two pals intend to live a wild life in the capital where there are plenty of lovely girls.But the uncle discovers that his dear nephew has a fiancee ,actually an unwed mother for she's got a little kid.The young man has fallen for the star of his variety show,a coquette fickle Chanteuse who ,in the end ,only has eyes for her co-star in the show .Uncle gets angry ,threatens to disinherit this infamous nephew and marries the young mom ,unbeknown to his fifty-something partner who has come to meet him in Paris.