Our protagonist, Nagashima Ichiro, is a middle school student who is no good at anything he does. He leads a dull school life, ridiculed by everyone around him. One day, Ichiro is picked on by his violent classmate, Nomura, and punches him. Ichiro would normally let it go without incident, but this time was different. In order to get revenge on Nomura, Ichiro asks his classmate and judo club captain, Arakawa, if he wants to learn judo. At first, Arakawa opposes Ichiro's request, saying it's a reckless idea, but after seeing Ichiro's hard work, he allows him to join the judo club. Before long, Ichiro begins to discover the joys of judo. Ichiro's hard work eventually has an impact on the judo club itself, which was previously just a weak team.