After her young son dies unjustly, Eun Soo Hyun, a psychology professor and famous writer, gets involved with people who suffer from pain similar to hers and solves their mysterious cases.
EPISODE 1
Episode 1
Soohyun rushes home to her sick son, but the joy of embracing Gunwoo is short-lived as she loses him in a traffic accident; as Soohyun suffers the sorrow of loss, the perpetrator is released on probation.
EPISODE 2
Episode 2
Soohyun is imprisoned for seeking revenge; she is released after seven years with a duty to fulfill.
EPISODE 3
Episode 3
Soohyun goes to find Seonyul to fulfill Hyeongja's request.
EPISODE 4
Episode 4
Soohyun is shocked after receiving an illicit photo of Suho, so she investigates; Seonyul seeks Soohyun to obtain Hyeongja's diary but encounters an unexpected fight; Soohyun's heart goes out to Seonyul, and she ends up volunteering as his protector.
EPISODE 5
Episode 5
Suho is shocked to see Suho enter the hotel room; Suho explains himself and seeks forgiveness; as the aftermath of the photo grows, Soohyun wonders who could have sent it; Seonyul senses Soohyun's sincerity and gradually opens up to her.
EPISODE 6
Episode 6
Soohyun encounters Eunmin and meets Seonyul in Eunmin's hospital room; after learning who sent the photo, Soohyun delves deeper into Eunmin's case; Seonyul becomes increasingly uncomfortable with Soohyun's caring gestures.
Kim Nam-joo
Cha Eun-woo
Kim Kang-woo
Im Se-mi
Won Mi-kyung
Park Hyuk-kwon
Lee Seungyeong
Jeong Sanghui
Kwon Seong-chang
Kim Ji-eun
