Fania, a young warrior, crosses paths with a young man who has lost his memory and goes by the name Tutor. The two set out on a journey together, and along the way they slowly uncover the truth about the enemy known as the Alien. They also learn that a hidden, mysterious power stands behind it and seeks to control the life of Slude, a young woman warrior. Resolved to act, they rise up to cleanse the land. The story is a 15-episode action fantasy ONA.