Antonio is the humble servant of a rich family governed by the Marquis Gastone. He is a young man madly in love with Lulu, but she betrays him, and he desperately enlist in the foreign legion.
Roaming the vast jungles of Congo with his best friend, Bongo the gorilla, Antonio della Buffas, a mysterious man whom the natives call the "white monkey", is utterly unaware that he is the long-lost son of a wealthy explorer. Then, three opportunists manage to capture and bring the white savage to civilisation, bent on getting their hands on his immense fortune.
In the village of Viggiù, the firemen organize various skits and performances in their theater, inviting all the celebrities known at that time.
