Former investigator Fang Yi-jen (Joseph Chang) and reporter turned public relations manager Hsu Hai-yin (Hsu Wei-ning) start a new life with his daughter Chiang Hsiao-meng (Moon Lee). However, Fang is embroiled in a series of deaths, becoming a prime suspect. The incidents link back to a murder case he responded to 15 years ago. Prosecutor Chang Keng-ha (Dean Fujioka) doubts Fang and his mentor Lin Ching-jui’s integrity. Fang collaborates with Detective Chao Cheng-kuan (Jason Wang) and forensic examiner Hsueh Hsin-ning (Tarcy Su) to uncover the truth and prove his innocence, or he risks losing his relationship with Chiang once again.