In the countryside town of Macacu, the hick Onofre receives a letter from his cousin Paulinho inviting him to travel to Rio de Janeiro to enjoy the Wonderful City. When the naive Onofre arrives, he is stolen in the bus station and lured by a taxi driver. He has to sleep on the sidewalk and beg for food without Paulinho's address that was in his suitcase. When he meets the musician Carlinhos Lyra, he uses the television broadcast to find Paulinho. Onofre is welcomed by Paulinho and his friends in Ipanema beach but the newcomer is clumsy and he is mocked by the whole gang from the beach. However, Onofre dates Dadá and Paulinho's girlfriend Patricia and the others girls believe that he is "good in bed". Meanwhile Onofre learns how to dance in an academy with the teacher Liz. When he is ready to dance, he invites Liz to date him in the New York City Discoteque. Andre and his male friends are jealous and believe that Onofre is a threat to them. When the prudish Martinha invites Onofre to her birthday party at home with her parents and two very big brothers, Andre and his friends plots a scheme to get rid off Onofre.