The world is in peril due to a deadly disease that affects only girls, known as the "Labyrinth Disease." To save it, the students are taking lessons on how to kill the girl and navigate through the labyrinth. They must form teams, study the weaknesses of the girl, and complete this task within 6 hours. If they fail, the world will be destroyed. However, one student expressed disinterest in saving the world and found the situation suffocating. Now, let's embark on a school fantasy adventure in labyrinth raiding!