A man who works at a nuclear plant is contaminated by radioactivity. On the way to the hospital, the ambulance has an accident, and the man's head disappears. Lost and free from its body, the head goes through many adventures.

Classical music student arrives from Buenos Aires to live with his rocker cousin in Rio De Janeiro. Between parties full of rock and roll, he has to decide between his childhood girlfriend, now a respectful businesswoman, and the volleyball player Vera.