After losing against Aoba Johsai, the whole Karasuno team feels at a loss. Especially Kageyama and Hinata, who seem to be the most devastated about the defeat. However, the team soon cheers up when a chance for them to go to Tokyo appears. During their training camp there, Karasuno will meet new formidable opponents.

Saitama is a hero who only became a hero for fun. After three years of “special” training, though, he’s become so strong that he’s practically invincible. In fact, he’s too strong — even his mightiest opponents are taken out with a single punch, and it turns out that being devastatingly powerful is actually kind of a bore. With his passion for being a hero lost along with his hair, yet still faced with new enemies every day, how much longer can he keep it going?

41岁的出租车司机小户川没有家人，不太跟他人有瓜葛，没几个熟人。他的乘客都是一些怪人。跟乘客看似无关痛痒的对话当中，隐藏着一名失踪少女的线索。