Lina and Naga deliver the most dangerous bandits to the king, who asks Lina to take action against Joyrock. He and the queen were contacted by the old sage Rowdy in dream and he told them the demon came back again to Mipross and is wreaking havoc in the northern part of the island, blocking the natural flux of hot spring's water, so the girl named Lina Inverse is the only able to beat him. Lina is initially reluctant, but in exchange of a reward (and Rowdy's promise to reveal the secret location of a hot spring that make things growing up) she and Naga decide to take action against the demon.