 In the beginning of the Twentieth Century, in Belo Horizonte, the industrial Sampaio lives in a manor house with his stepdaughter Carmen, who has a sort of engagement with Roberto. Sampaio s daughter Neusa, of same age as Carmen, was sent to a metropolis to have a modern education and returns to Belo Horizonte. In the São João party in the country of Acaba-Mundo, promoted by the traditional Marta, Neusa has a one night stand with Roberto. Carmen witnesses their affair and decides to commit suicide. Meanwhile, Cristovão and his cousin Max decides to go to a cabaret in town instead of staying in the party,. They find Carmen and bring her to Marta s property, where she stays with the family and Tufy, Max s younger brother. Along this period, Cristovão falls in love for Carmen, and she has to decide between the love of the unfaithful Roberto and Cristovão.