The detective drama is about a police officer So-Eun. She participates in the child abduction investigation and she acts as the representative of a child's mother. So-Eun receives a shocking phone call when everything has spiraled out of her control. Meanwhile there is someone named Hye-Jin who is a mysterious person who knows a secret hidden behind the cases that So-Eun is investigating. Police Officer So-Eun takes part in the investigation and acts as stand-in for a kidnapped child's mother. So-Eun receives a shocking phone call. Meanwhile, Hye-Jin is a mysterious person, who knows a hidden secret behind the cases.
