Edgard works as a subordinate in the company of millionaire Werneck and is in love with Ritinha, a simple woman who works as a teacher to support her mother and her three sisters. One day, Peixoto, Werneck's son-in-law, makes him a proposal to marry Maria, the boss's daughter. The reason is that Maria was abused and now is being forced to marry by her family. Edgard hesitates first but accepts the offer. From then on he enters into a great doubt: should he deposit the check and marry Maria or stay with Ritinha, his great love?
Luiz Mario, a São Paulo night-club impresario and a classic "bon vivant", is also an avid collector of love affairs. He is surrounded by all types of women, with whom he has torrid flings, but he is never able to emotionally involve himself. Until one day, while passing by Rio de Janeiro, he falls head-over-heels for the carioca Malu, who practically runs him over on her bike while riding down Leblon's beach bike path. The couple's fervent romance is abruptly thrown into disarray when an enigmatic love letter is discovered. From then on, the story between the two lovers is turned upside-down. Luiz Mario is consumed by jealousy and his emotions slowly seep into his relationship, destroying everything.
In the underworld of the city of São Paulo, there is a real business that is making money for a lot of people: fights. The small wrestling clubs attract many rich men who want to bet their fortunes on illegal disputes between poor men, who have to fight to survive and earn a few bucks.
