[5][6] Carmen is married to Carlos, a rude, emotionally abusive construction worker who barely pays any attention to his wife and teenage daughter.

She enlists the aid of Pepe and his hypnotism teacher, odontologist Dr. Fumetti, and together discover the truth: Carlos had sleeping mediumnic abilities, and the failed hypnosis act caused a dead man's soul to forge a spiritual link with him, possessing him at times.

After investigating further, Carmen and Pepe eventually find out the identity of the dead man, a dancing prodigy named Alberto "Tito" Cantero who had schizophrenia and murdered his own mother before committing suicide in 1983.

Time passes, and Carmen is left conflicted about what to do, while the Tito-possessed Carlos becomes increasingly unhinged due to his constant psychotic visions of chimpanzees tormenting him.

In order to solve the situation once for all, Pepe pretends to be an entertainer and performs a hypnotism act for the guests, which he uses to send both Tito and Carmen to the depths of Carlos's mind.