After the death of the paranoid emperor Tiberius, Caligula, his heir, seizes power and plunges the empire into a bloody spiral of madness and depravity.
Claudia and Anna join Anna's lover, Sandro, on a boat trip to a remote volcanic island. When Anna goes missing, a search is launched. In the meantime, Sandro and Claudia become involved in a romance despite Anna's disappearance, though the relationship suffers from guilt and tension.
Master gunslinger Sabata arrives in Hobsonville, a town completely owned by McIntock, a robber baron who is taxing the inhabitants for the cost of future improvements to the town. Or that's what McIntock says he'll do with the money...
