Kiyotaka ayanokoji has just enrolled at tokyo koudo ikusei senior high school, where it's said that 100% of students go on to college or find employment. but he ends up in class 1-d, which is full of all the school's problem children. what's more, every month, the school awards students points with a cash value of 100,000 yen, and the classes employ a laissez-faire policy in which talking, sleeping, and even sabotage are permitted during class. one month later, ayanokoji, horikita, and the students of class d learn the truth of the system in place within their school...