Sana Minatozaki is unlike any woman Im Na Yeon has met before. but now she's missing, and NaYeon knows something is dangerously wrong. the only person who can help her find her is Detective Dahyun Kim, Sana's partner. As NaYeon and Dahyun dig deeper into the star-cross Killer case and the body count rises, the truth about Sana's disappearance becomes chillingly clear.