The plane of a military man falls in an isolated area of the forest and, in time, he becomes a man-beast, a troglodyte. He is found by a scientist who turns him into a guinea pig for an experimental potion. The experiment fails and the troglodyte becomes a satyr who attacks and kidnaps maidens to take them to a cave where he subjects them to atrocities.
as Capitán Richard, el hombre bestia
as Esther
as Dr. Marchesi
as Alberto
as Enriqueta
as Profesor Robinson
as Susana
as Margarita
as Don Nicolás Santillán
as Profesor Berard
as Detective Jackson
as Pescador
