Seo Se-hyun has become renowned for solving high-profile murder cases with her quick and accurate autopsies and exceptional intelligence. However, she has Antisocial Personality Disorder. In other words, she’s a sociopath. One day, a corpse covered with jagged cuts and stitches, with no DNA or fingerprints left behind, is discovered. She comes to realize that Yoon Jo-gyun, her biological father/mentor who had taught her all she knew of anatomy, has come back from the dead and is threatening her.