Oh Hyun-Jae used to be a top criminal profiler. He solved many cases with his skills, but an explosion, caused by a serial killer, ended the life of his fiancé. After the horrific incident, Oh Hyun-Jae vanished and he now lives in seclusion. Meanwhile, Cha Soo-Young is police officer in a rural area. She has a special ability, which allows her to remember everything that she saw. Due to her special ability, she is selected as a rookie detective who will partner with Oh Hyun-Jae informally.

A dogged detective in pursuit of a faceless drug kingpin gets a much-needed break when a survivor from a mysterious factory explosion decides to help.

Dr. Mi-Soo misdiagnoses a patient after she meets the woman's husband, whom she assumes to be abusive. With his wife in grave condition, the man sues the hospital. Kang-Il is a widowed firefighter who overhears the situation and when he attempts to counsel the woman's husband, he is assaulted by him. When Mi-Soo learns about the confrontation, she tries to get Kang-Il to be a character witness for her and realizes that he may also be her true love.