Ricco plot
"No swords, no guns, no knives, no weapons. Just a burning pool of acid!"
Ricco (Christopher Mitchum) is the son of tough businessman Gaspare Aversi (Luis Induni). However, his father is murdered and Ricco is thrown in prison when he suspects the criminal Don Vito of the murder and attacks him. A few years later, he is released early and goes in search of his former sweetheart Rosa (Malisa Longo) and his father's former companions. He ends up in Turin and discovers that Rosa is now Don Vito's sweetheart. Rosa's niece, Scilla (Barbara Bouchet), helps him break into Don Vito's villa to meet Rosa. From that moment on, things get more and more out of hand.