Juan is a widowed dad with three children. He was on the verge of ruin, but he inherits a fortune from his uncle, Giancarlo. In exchange, the family will have to take care of Chueco, a chimpanzee who has a big secret: he can talk! Things get complicated when Professor Macarato, an old research partner of his uncle, pays him a visit and tries to steal the ape from him.

Chueco accidentally turns Juan in the hairiest man in the world.

Chueco goes to the cinema. Soon, he becomes bored and annoys the audience until he gets kicked out.

The family is forced to treat Chueco like a chimpanzee to stop him from being taken to a sanctuary.

Chueco turns into Dr. Apeius, the manager for "Los Desquiciados", Delfina's rock band.

Chueco teaches Juan the noble art of poker and deceit… but the consequences are catastrophic.

Juan is invited to go on tour and must leave the kids with his in-laws.

Chueco is kidnapped by Macarato's men, but he convinces them that he is actually an alien.

Chueco invokes the spirit of Uncle Giancarlo while playing with a Ouija board.

Chueco talks right in front of a neighbor and Juan is forced to pretend to be a ventriloquist.

Chueco decides to cook and Juan's girlfriend gets dangerously close to discovering that he can talk.

A famous actor visits the family. Chueco is suspicious and tries to unmask his true intentions.

Chueco is forced to leave the Gustozzi family when a new heir to Uncle Giancarlo appears.