This film is the pearl of his pioneer work in Madeira Island and captures the most of his methodology: good stories taking the most of Madeira's natural scenery, and provoking the audience with some ironic and "double-sense" scenes. The film tells the story of an English girl travelling with her father, a botanic, and a guide from madeira in the deep mountains of the island. The girl has some mental disturbs and is always scaring about an attack from the native man, appearing as a half-man/half-monster.