On the brink of death after a car accident, Choi Kang Ta receives a heart and two eyes from professional boxer Jeon Kwang Seok, who has a limited lifespan. After a transplant, he survives and begins a boxing career. Alongside boxing, Choi Kang Ta manages the Biryong company to sustain the Hapsimwon orphanage, but Kim Tae Poong intervenes and leads Biryong to bankruptcy. Following this, Choi Kang Ta receives a business partnership offer from wealthy businessman Pyo Ju Bak and establishes Biryong Planning. As the company grows into an impressive new group, he undergoes superhuman training and emerges as a legendary boxer, achieving consecutive victories in tours across the United States. Meanwhile, domestically, the Guryeong group declares bankruptcy and faces ruin. Choi Kang Ta returns to his home country, forgives Kim Tae Poong instead of seeking revenge, and then travels again to the United States to become the unified champion, proclaiming the tenacity and greatness of the Korean people to the world.