Vampire hunter D is the offspring of the vampire king and a human woman. He is agile and a well-known vampire hunter. This time, Charlotte, the daughter of the Elbon family, was abducted by vampires. The owner of the manor invited D and the vampire hunter Marx to rescue her. On the way, D and Marx competed with each other for the reward and parted unhappily. Later, D was attacked by the three nobles. At the critical moment, D suddenly fell ill. When he was in danger, Leila, one of the Marx brothers and sisters, saved D. They agreed that whoever died first would go to his grave to lay flowers. Later, they found out that Charlotte was not abducted by vampires, but fell in love with the vampire Mael. The two eloped together and were heading to the castle of the vampire countess Camilla to take Camilla's spaceship to the paradise "Night City" to start their new life. However, Camilla just deceived them. Her real purpose was to suck Charlotte's blood to revive herself. D arrived in time and started a life-and-death battle with Camilla.