The floating corpse of a "mermaid" is discovered in a seafood night market, unveiling the prelude to a serial murder case
The mysterious symbols on the victims connected unsolved cases twenty years ago. During the pursuit of the murderer, the detective captain encountered a flashback and discovered his secret connection with the case. It seems that the victim's family is actually the real murderer. A shocking layout with a perfect alibi and a final showdown in an abandoned shipyard reveal the truth about cross-generational revenge.
