Our protagonist, Suga Natsuno, by one way or another becomes teacher in charge of Class 3-Z. Natsuno dreamt of being like the hot-blooded teachers seen in TV dramas, but the class is full of "irregular" students. The director said that if he clears the ‘condition’ given to him, he’ll properly hire him but…said condition is to pretty much to have all the students of Class 3-Z graduate. Will he ever succeed considering most of the students don’t exactly care about that subject?