At the SCRS (Seiko Cup Rally Series), talented young drivers hope to advance to the WRC (World Rally Championship). Atsuhiro Hiyama is the chief mechanic and an engineer at Supika Racing Factory. He is well regarded by his peers. His younger brother is Naozumi. He is an extremely gifted driver for Supika Racing Factory, but he is also a troublemaker. They continually argue because of Naozumi's reckless racing style. One day, Hikaru Endo becomes his manager.

A mysterious creature destroys part of the moon and then warns that if it is not destroyed before March of the following year, Earth will be next. It also demands to become the homeroom teacher of Class E, a third-year class at Kunugigaoka High School. As the deadline for the assassination and the date of the end of the world approach, the students discover their true abilities and Koro-sensei's shocking identity.

A mysterious creature destroys part of the moon and then warns that, if it is not destroyed before March of the following year, Earth will be next. It also demands to become the homeroom teacher of Class E, a third-year class at Kunugigaoka High School.