Intrigued by the tale of a strange man living in isolation with a chimpanzee, filmmaker David Romberg travels to his childhood home on Ilha Grande, Brazil to find him, only to discover that the tale pales in comparison to the what he uncovers.

Set on a remote jungle island, “The Man of the Monkey”, unravels a labyrinth of interconnected uncanny characters, all seeking refuge. Amongst them, an exiled Argentine Jewish artist haunted by phantoms of the past, an aging prisoner with nowhere to go, and a suspected Nazi living in isolation with a monkey.