Goemon enters a hall lined with samurai armor, but his entrance has triggered the hall to fill with a hallucinogenic gas. The gas causes him to attack Lupin and his friends, and in the scuffle he inadvertently injures Murasaki. After surviving the gas, Lupin and company enter a large cavern, where they find an old castle furnished from top to bottom with items of solid gold. They are ambushed by the Fuma Clan; Kazami captures Murasaki and holds her hostage at knife point. Not wanting to cause the death of Goemon, Murasaki throws herself off the castle roof, taking the treacherous Kazami with her. Enraged, Goemon pursues the Boss in a running battle across the roof, ending with the Boss' death. Lupin and Jigen rescue Murasaki, who had just managed to catch a ledge to prevent her from falling to her death.