Senior Forensic Chemist Ko On, Forensic Pathologist Man Ka Hei, and Senior Inspector Kwok Fai Wong form a powerful crime-solving trio, leading their respective teams from the Forensic Science Division, Pathology Division, and Kowloon West Crime Unit. United by a shared pursuit of justice, they tackle complex cases with precision and resolve.

Their investigations intertwine with the lives of those around them: passionate reporter Chris Tsui, whose unresolved childhood trauma ties back to Ko On; Scientific Evidence Officer Shui Wai Ming, thrust into suspicion after a shocking betrayal; and elite officer Ko Ching, who tirelessly searches for the truth behind her sister’s abduction.

Together, this unwavering team proves that, even in the darkest moments, justice will prevail and good will triumph over evil.