Don Michael Corleone está envelhecendo e, com a ajuda do sobrinho Vicente Mancini, busca a legitimação dos interesses da família, em Nova York e na Itália, antes de sua morte. Mas seu protegido não está só interessado em parte do império da família. Ele também deseja a filha de Michael, Mary.
The master of Italian horror, Lucio Fulci, stars as... Lucio Fulci, a filmmaker with a reputation for gruesome horror films. His body of work has started to plague his mental state, and he is haunted by the grotesque set-pieces his mind has conjured up during his career. His psychiatrist, Egon Schwarz, uses a hypnotised Fulci as an avatar to carry out his own disturbed fantasies, in hopes of ruining the master’s reputation once and for all.