[The Dangerous Coexistence of a Suspicious Amnesiac Man and a Homicide Detective] Homicide detective Kim I-eum rescues a man who collapsed on a mountain trail during an investigation. The man, suffering from amnesia, believes he is just a child. An unidentified man and the detective who becomes his guardian. What begins as a tense, suspicious cohabitation slowly unravels into unexpected truths… and emotions neither of them anticipated.