The story, which is unusual to say the least, takes place at Kunugigaoka Middle School. Koro Sensei is a strange creature with tentacles and a round, yellow head, capable of moving at Mach 20 and endowed with phenomenal strength. This extraordinary teacher teaches class 3-E (E for “End”) with the stated goal of destroying the Earth next March. His students, a bunch of dunces with a penchant for murder, will therefore attempt to assassinate their teacher in time to save the planet. So, are you ready to follow their very intense school year?