The mad king's obsession

He was the mad king. The vampire king who plots killings and despair to humans and his enemies. He was he who hated humans so much that he build organisations to do his dirty works. His aim - to wipe out humans to extinction just as they did to his specie and prove who was the true head of the food chain. Yet, as he was mad, he was also a hypocrite. Because somewhere in his grand mansion was a secret passage and in that secret passage was a metal door with two heavy metal crossbars and locks. Behind that door was his mate and she was the mad king's obsession.