When Kirisawa Shogo was a high school student, he was a brilliant amateur boxer. He won 4 boxing tournaments and he seemed to have a bright future in the sport. During his university student days, he quit the sport of boxing. Life went on for Kirisawa Shogo. But, after his beloved wife died, his life has now become a total mess. He doesn't have any hope or desire to live. He just spends his days working part-time jobs to make a living. One day, his friend asks him to coach the boxing team at the high school where they attended. Kirisawa Shogo accepts the coaching position. Being around the young boxers, who work extremely hard, Kirisawa Shogo begins to feel alive once again.

เรื่องราวของอดีตแชมป์นักมวย เลิกชกมวยด้วยเหตุผลบางอย่าง และสูญเสียความหวังในการมีชีวิตทำงานส่งพิซซ่าไปวันๆ วันหนึ่งได้ถูกขอร้องให้กลับมาเป็นโค้ชในโรงเรียนม.ปลาย