In the 11th century, one company of knights was said to be invincible due to two men: Leon Belmont, a baron who feared nothing and whose combat skills were second to none. And his friend Mathias Cronqvist, a genius tactician whose education made him an exception, in a largely illiterate society. But one day, as Mathias returned from a victorious campaign, he received news of the sudden death of his wife, Elisabetha. His grief was profound and he became bedridden.
A year later, an army of monsters suddenly appeared in Leon's domain. Leon wanted permission to retaliate, but the Church denied his request. One night, Mathias struggled from his bed. He told Leon that the monsters were related to a vampire who lived in a castle of a forest in eternal night. Mathias also said that Leon's betrothed, Sara Trantoul, was kidnapped by this vampire and brought to his castle. Because Leon couldn't fight the vampire without the Church's permission, he renounced his title as a baron and journeyed to Eternal Night.
On his way, he runs into an old man who happens to be a merchant at his house named Rinaldo Gandolfi. With his assistant, Leon receives the Whip of Alchemy as his weapon and Leon heads to the castle to find the enemy who kidnapped Sara. The path to the unknown enemy is sealed, so Leon has to complete five areas in another location to break the seal to the unknown enemy.
