Historia de Leon, estudiante de Sociología, y su novia Leticia, de Arquitectura, que se enamora de Paulo, estudiante de Medicina y mejor amigo y compañero de habitación de Leon. Aunque el triángulo no llega a consumarse, sí provoca tensiones entre ellos. Los tres conocen a Rosalina, una paciente terminal del Hospital Universitario en el que Paulo está haciendo su internado.
The film tells the story of three friends in Rio de Janeiro: Leon, a sociology student; his girlfiend Leticia, an architecture student; and Paulo, a medical student and Leon's best friend and roommate. Although Paulo finds himself attracted to Leticia, his friendship with Leon prevents him from acting on his feelings. When Rosalind, a leukemia patient at the hospital where Paulo interns, asks him to get in touch with her sons, the three friends are pulled out of their relatively tranquil lives and drawn into the violence and police corruption in one of Rio's infamous favelas.