Psychology professor and writer Eun Soo Hyun's world shatters when her son suffers an unpunished injustice. Seeking vengeance, she unexpectedly discovers solace helping others embroiled in comparable cryptic cases.
Cast:Oh Man-seok , Kim Nam-ju , Won Hee Lee , Cha Eun-woo , Im She-mi , Kim Kang-woo , Lee Joon , Yang Hye-Ji , Park Hyuk-kwon , Lim Ji-Sub , Gil Hae-Yeon , Cha Soo-yeon , Kang Myung-joo
Devastated after her son's accidental death, a grieving mother takes justice into her own hands when the culprit evades punishment.
Soo Hyun's quest for revenge lands her in prison. Seven years later, she's released and tasked with a mission she must carry out.
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.
Soohyun is taken aback when Suho unexpectedly arrives at the hotel. Concurrently, she attends to Seonyul's needs.
Soohyun receives a mysterious photo that leads her to clash with the reckless Seonyul, who constantly puts himself in harm's way, embroiling them in a dangerous situation.
Soohyun, suspects that Seonyul might not be the victim. She embarks on a journey to uncover Seonyul's true identity.
Soohyun's world unravels as she uncovers Seonyul's true self, setting the stage for a tense confrontation to protect her family from Seonyul's wrath.
Soo Hyun finds out what really happened to her son and the Kwon family role.
Seonyul hears the truth, the real killer becomes the focus.