In 1988, when I was 18 years old, I witnessed my father being publicly humiliated, slapped, and trampled on his dignity by Aaron from Fuhehui. When he wanted to take action, he was stopped by his father's gaze. Three days later, the mysterious old man Nguyen Van Thong appeared and took him away from Saigon, disappearing for four years. For four years, he received hellish training on the northern border: fighting, equipment, mental skills, and business. Before leaving, the master left a note: "You have left the profession." In 1992, 22-year-old Le Chuan returned to Saigon with a new identity and opened a trading company called "Chuan Thanh". He is no longer weak, but the enemies he faces are larger and more complex than he imagined.