On one rainy day, an Adapter attacks the passengers on a tram. Luckily, Aoto, another Adapter who was at the scene, stops him with his ability. Akane and Midori are ordered by the Academy to recruit Aoto, but they hear a disturbing rumor about him.

Lead by Arthur, the Knights of Round and the Adapters from the Academy head for the Divine Gate. Arthur explains that his wish is to destroy the Gate and return the world to its original state. However, Loki and Oz stand in their way to stop them.

After escaping Shakespeare's divine play, Akane, Midori, and Aoto find themselves inside the zone. Aoto already holds the key to the Gate, but Akane and Midori do not. Unfortunately, Loki already has that figured out, and great tragedy awaits the two.