In the countryside of England, the Duc de Richleau a.k.a Nicholas welcomes his old friend Rex Van Ryn that has flown to meet him and Simon Aron, who is the son of an old friend of them that had assed away but charged them the task of watching the youngster. Nicholas and Rex unex ectedly visit Simon that is receiving twelve mysterious friends. Sooner Nicholas, who is roficient in black magic, learns that the guests are member of a satanic cult and Simon and his friend Tanith Carlisle will be ba tized by the owerful leader Mocata to serve the devil. The two friends abduct Simon and Tanith ex ecting to save their souls but Mocata summons the Angel of Death and the Goat of Mendes to hel him in a battle between the good and the forces of evil.