Tokyo Metropolitan Advanced Nurturing High School.
The school boasts a 100% advancement rate and employment rate, and students receive points equivalent to 100,000 yen in cash every month.
It is a paradise-like school, but in reality, it is a school that judges its students based on merit, where only a few students with excellent grades receive favorable treatment.
Kiyotaka Ayanokoji is assigned to Class D, a class full of problem children, and he cooperates with his classmate Suzune Horikita, who is aiming for promotion to Class A.
After completing a survival test on a deserted island, the students enjoys a brief rest on a luxury cruise ship, but then a new special exam is about to begin, in which each class is involved. Will it be for the class, for the group, or for the individual?
While the other classes are showing disturbing behaviour, Class D, which lacks cohesion, finds itself in a tight spot.
Can the students, torn between trust and suspicion, see through the truth?
A new school apocalypse is about to unveil once again.