For three days at the Copacabana Palace in Rio de Janeiro, amorous cross-fertilizations are intertwined with petty tricks against the backdrop of the famous carnival festivities. Three (sympathetic) accomplices are beaten to a punch in the hotel vault; three charming stewardesses are looking for entertainment, but their three Carioca host, musicians Tom Jobim, Luiz Bonfá, and João Gilberto, are married; a man, separated from his wife, wants to catch her in the act of adultery.