A surprise demonic attack on Rovania's castle threatens to destabilize the fragile peace between neighboring kingdoms. Kala, captain of the royal guard, follows an evil aura to a mysterious dwelling. The alchemist Shalina, who has fused her soul with demonic relics to achieve immortality, lives there. At first enemies, they struggle to uncover the truth, culminating in a romantic passion filled with adventure and danger. Unbeknownst to them, however, is the invisible presence of a second demon whose intentions are a mystery.