Qingyu City lies where the rivers meet the sea. On the surface, it's a prosperous new port city with beautiful scenery. Beneath that, the old district hides dark secrets, while the new elite are tangled in battles over wealth and influence.
Behind the murders, is the truth driven by revenge, a killing to protect someone's interests, or someone using an old case to cover up a new conspiracy?
- Male Lead: Lu Chen, 32, head of the Major Crimes Unit in Qingyu City's Criminal Investigation Division. Calm and perceptive, with exceptional observational skills and a mild case of obsessive-compulsive disorder. As a child, he witnessed his mother, one of the victims in a missing-person case, disappear. He has secretly pursued the truth for years, but this new murder forces him to confront his past trauma.
- Female Lead: Su Wan, 29, a PhD in criminal psychology. She returns to Qingyu City for her academic research and is invited to assist the police with the case. Meticulous in her reasoning and skilled at unpacking suspects' psychology, she has a secret of her own: her grandfather was the prime suspect in the old missing-person case and later died by suicide after jumping from a building. She wants to prove his innocence.
