A psychiatrist experiments on four volunteers with LSD to examine '60s drug culture, soon unleashing an expert in depravity.

Brazil, the 1920s. The sadistic colonel Minas massacres the hometown of a famous cangaceiro (a kind of revolutionary bandit). The only survivor is a young farmer called Espedito; he is nursed back to health by a hermit who thinks he has been sent by God and therefore baptizes him the Redeemer. Espedito/The Redeemer forms his own gang of cangaceiros but doesn’t really understand what he’s doing until he befriends the proverbial European intellectual, a Dutch Oil prospector, who introduces him to important people. Espedito is hired by the Dutchman and a corrupt local governor, but then the Dutchman changes sides …