Wherever there is delicious food, one is sure to find Lina, a self-proclaimed beautiful genius sorceress, and Gourry, who claims to be her protector. As usual, they arrive at a seaside town famous for its octopus, thinking they can enjoy free octopus delicacies just by helping with fishing. However, Lina becomes so overly enthusiastic about fishing that she ends up destroying not only the fish but also the boats. In the end, only Gourry gets to savor the octopus feast... Yet this marks the beginning of a terrifying incident! Anyone who eats the octopus contracts a strange illness known as "speaking only in octopus language," and Gourry is infected as well. But as the situation escalates, even those who haven’t eaten octopus fall victim to the disease, and the disaster continues to spread. Zelgadiss and Amelia, who rush to help upon hearing Gourry is in danger, also become infected. Even Lina, their only hope, is not spared... A sealed demon tribe is on the verge of revival, and the apocalypse of human extinction seems imminent! Can Lina and the others save the world? Or will they at least get to enjoy delicious octopus? 　　This work focuses on characters from the TV series (Gourry, Zelgadiss, Amelia, and Xelloss). Lina’s outfit is also based on the TV series. On the other hand, the opening BGM is inherited from the movie series.