Wafer factory-owner P. Tinto and his wife Olivia want a child of their own more than anything else in the world. Years of trying, however, have left them with nothing but a pair of extraterrestrial midgets living in the spare bedroom. When they decide to try adoption, a series of misroutings and chance encounters results in an escaped adult mental patient arriving at their door with adoption papers in hand. P. Tinto and Olivia accept this without question and welcome him in as their son. Can this family arrangement work?

Luis Ciges
as P. Tinto

Pablo Pinedo
as Joselito

Silvia Casanova
as Olivia

Emilio Gavira
as Marcianito 2 (El Teniente)

Javier Aller
as Marcianito 1 (José Ramón)

Janfri Topera
as Usillos

Bermúdez
as P. Tinto joven (as Carlos Soto)

Tomás Sáez
as Padre Marciano

Germán Montaner
as Crispín

Pepe Viyuela
as Manikomien Direktorr