桐泽祥吾曾是前途无量的拳击选手，却因故放弃拳击，后来更在痛失爱妻等一连串的打击下一蹶不振、失去活下去的希望。好友及恩师为他担忧不已，邀请他重回母校担任拳击社的教练。原本心如死灰的他，看着一众挥洒汗水、热血求胜的高中生，在指导鼓舞他们的过程中，终于逐渐重燃自己对拳击及人生的热情。

桐澤祥吾曾是前途無量的拳擊選手，卻因故放棄拳擊，後來更在痛失愛妻等一連串的打擊下一蹶不振、失去活下去的希望。好友及恩師為他擔憂不已，邀請他重回母校擔任拳擊社的教練。原本心如死灰的他，看著一眾揮灑汗水、熱血求勝的高中生，在指導鼓舞他們的過程中，終於逐漸重燃自己對拳擊及人生的熱情。

木村拓哉飾演的主角桐澤祥吾曾在高中拳擊賽中獲得4連冠，經歷人生閃耀輝煌時期後，因為 某種理由放棄了拳擊，其後更失去了深愛的妻子，接連的打擊讓他完全喪失了對生命的希望。 而意外成為母校松葉台高中拳擊部教練讓他的心一點點熱起來，在改變困惑的年輕人的同時他 自己也在改變，繼續邁向新的未來。

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.

高校時代にボクシングで４冠を達成した後、30年近くの時を経て《高校ボクシング部のコーチ》に就任する主人公・桐沢祥吾。ところが、彼の人生が輝いていたのはごく一時期…。実は、大学時代にはある理由でボクシングを断念。その後も最愛の妻を亡くした上、さらなる不運に見舞われ、今では《生きる希望を完全喪失している男》なのです。そんな男の人生は、図らずもボクシング部のコーチになったことで徐々に熱を取り戻し、大きく動き出すことに…！

고등학교 시절 복싱 4관왕을 달성한 후 어떤 사건으로 대학교 시절 복싱을 그만두고 불운의 사고로 아내까지 잃어버린 그가 고교 복싱 코치가 되어 다시 열정을 찾아가게 되는 이야기