 Lenzi said in later interviews that this was one of his favorite films, but he felt it was ruined by the low budget and some of the shoddy actors with whom he was forced to work.Two American college students, Dick, his sister Jessica, and her English boyfriend Kevin, are traveling through Brazil on vacation when Dick, after attending a bizarre voodoo ceremony, develops strange powers.When their jeep breaks down near a small plantation in the jungle outside Rio, the site of a former slave rebellion one hundred years ago, Dick uses his powers to raise the dead of six executed Negro slaves, who target the college kids and the residents of the plantation to seek revenge for their deaths.