Maria do Carmo, known professionally as Karina (Angelina Muniz), is trapped in an abusive marriage with Rufino (Luigi Picchi), a corrupt casino owner and smuggler who exploits her as a dancer and prostitute to pay off his financial debts. When Rufino tries to force her into a liaison with his obsessive friend Lucas (Cláudio Cunha), the situation escalates into violence, resulting in Rufino's death. Karina is arrested for the murder, but Sheila (Rosina Malbouisson), a sympathetic female lawyer, secures her release. Moving in together, Karina and Sheila form a passionate romantic and physical connection, but their newfound sanctuary is threatened when Lucas continues to stalk and pursue Karina.