A sort of 21st century Faust from São Paulo, Brazil, Identities follows the physical and emotional transformations of its protagonists. The young Faust, a man who was born in a woman’s body, wanders, almost deliriously, in search of Mephistopheles: in search of some pact that would magically grant him the desired transition. Mistaken for the devil in the subway (and, maliciously, assuming this deceptive role), Supposed Mephistopheles enters, therefore, in Faust’s trance. Supposed Mephistopheles suffers from a mosaic genetic condition that causes massive tumors to grow, visible, along the nerves of one of his legs; a condition that could be transmitted, even in hyperbolic variations, to his descendants – and Camila, with whom he has a romantic relationship, is pregnant. Aware of the possible hereditary transmission, Camila considers whether to interrupt her pregnancy.