A new patient mysteriously appears in a psychiatric ward. He claims to come from another planet to study humans and their behavior. The alien is gentle but criticizes humans for their harsh treatment of each other. The assigned psychiatrist is himself unhappy, and affected by the patient's insight. But he is ordered to treat the patient according to institutional procedure.

Lorenzo Quinteros
as Dr. Julio Denis

Hugo Soto
as Rantes

Inés Vernengo
as Beatriz Dick

Cristina Scaramuzza
as Nurse

Tomas Voth
as

David Edery
as

Rúbens Correa
as Doctor Prieto

Rodolfo Rodas
as

Horacio Marassi
as

Jean Pierre Reguerraz
as