Stahn Aileron is a young man living in the country, who wants to explore the world. To reach his goal, he stowaways on the airship Draconis. However, the ship is attacked by monsters.
Stahn finds a Swordian named Dymlos in the storage area. After forming a pact with the Swordian, he escapes. After learning about a plot to use the power of the Eye of Atamoni, he joins others who have pacts with the Swordians in an effort to stop them.
