Chronic serial womanizer Stephane Margelle drops his wife Sophie off at the airport so she can go away for Easter weekend. He immediately picks up beautiful young Julie, who has just had a fight with her married boyfriend. He gets her back to his apartment and is preparing for a sexy weekend, when his wife suddenly returns home. He makes up a bizarre, on-the-spot, spur-of-the-moment story that the gorgeous girl is actually his long-lost daughter. Julie plays along, but this leads to a whole series of increasingly ridiculous lies and comical situations (such as when her real mother shows up).

Chronicles the life of a 17 year-old girl living in the upper-class Rio de Janeiro neighbourhood of Ipanema. Márcia lives a life of parties and spend her days among bohemians, musicians and intellectuals. While seeming happy in the outside, she's extremely anguished inside. Based on the famous song by Antonio Carlos Jobim and Vinicius de Moraes.