Having journeyed to Monster Isle, the Gourmet Guild runs into Kasumi and Makoto, who are there with their fellow Caon members to investigate a series of recent Shadow appearances. Armed with an extensive knowledge of Shadows thanks to their previous battles, the Gourmet Guild members decide to help with Caon's investigation...

The Shadows on Monster Isle form a swarm with the golems and launch an attack on the islanders. Meanwhile Pecorine suddenly disappears from sight. While the Caon members, along with Yuuki and the others, are putting up a desperate fight to protect the island, Kasumi comes up with a secret plan to stop the Shadows' progress.

Recently, a mysterious knight has been appearing around Landosol and harming the residents. Inspired by Pecorine, who is angry that the people won't be able to enjoy their delicious food, the Gourmet Guild takes on a quest to defeat the culprit. Along the way, they meet a small girl who calls herself a soldier.

Pecorine confesses to the people of Landosol that she is the true Princess Eustiana. In order to reclaim her name and throne, she vows to overthrow the imposter princess—the Omniscient Kaiser. However, she must first fight against the captain of Nightmare, Jun, who has been brainwashed...