CK Law Firm is a well-known law firm in the city. One of the partners, Lei Yau Fai (played by Alex Fong), is known as the "general who always wins" in the legal profession. However, he caused a group of merchants to lose the case in the collapse of the Shing Fu Shopping Center ten years ago. The daughter of the richest man in the city, Guo Shirong (played by Liao Qizhi), Guo Jiayi, died suddenly in the studio. The grandson of the merchant Zhu Ma (played by Paw Hee Ching) at that time, Li Yifeng, was arrested as a suspect because he was at the scene and was charged with first-degree murder! Zhu Ma was at a loss when facing her grandson being charged with murder and could only seek legal aid. Zhang Meiyi, a partner of Lei Yau Fai's law firm, accepted Zhu Ma's legal aid and sent the newcomer of the law firm, He Xueming (played by Chan Ka Lok) to take charge. In order to make up for the guilt of losing the lawsuit ten years ago, Lei Yau Fai also decided to help He Xueming to clear Li Yifeng's name. During the investigation, Lei Youhui unravels the mystery and discovers another hidden story behind the case. However, witnesses go back on their words, evidence is destroyed, and colleagues are killed... In order to bring the real murderer to justice, Lei Youhui has no choice but to fight back in the final trial!