High school sweethearts Jung-woo and Soo-yeon were separated in a horrifying tragedy that continues to weigh down on them as adults. Now a guilt-ridden detective, Jung-woo has been desperately searching for Soo-yeon for years, but when he crosses paths with her again, she has already become someone else with a new identity.
Episode 1
Han Jung Woo befriends Lee Seo Yeon, the daughter of a murderer.
Episode 2
Han Jung Woo defends Lee Seo Yeon in front of their classmates.
Episode 3
Han Jung Woo and Lee Seo Yeon are kidnapped.
Episode 4
Detective Kim desperately search for traces of Lee Seo Yeon.
Episode 5
Nurse Jung is found dead in a swimming pool.
Episode 6
Han Jung Woo may have discovered Zoey's true identity.
Episode 7
Lee Seo Yeon's rapist is murdered.
Episode 8
New evidence shows that Sang Deung's killer was, in fact, a woman.
Episode 9
Lee Seo Yeon's mother sees Zoey at the police station.
Episode 10
Harry takes Zoey to have dinner with Han Tae Joon and his wife.
Episode 11
Zoey finds out that Han Jung Woo left his home when he was fifteen.
Episode 12
Jung Woo interrogates the cleaning lady on the murder of Kang Sang Deung.
Episode 13
Jung Woo digs deeper into the mystery of Harry's aunt's death.
Episode 14
Jung Woo discovered his kidnapping 14 years ago and the two recent murders are all connected.
Episode 15
Jung Woo gets himself fired to make sure his team gets to lead the current case.
Episode 16
Zoey finds out that the woman Jung Woo calls aunt and Harry's mother are the same person.
Episode 17
Zoey finds out that the woman Jung Woo calls aunt and Harry's mother are the same person.
Episode 18
Jung Woo and Lee Seo Yeon spent some time together after running away from the cops.
Episode 19
Jung Woo and his team finds evidence that Harry have also committed a crime in France.
Episode 20
Jung Woo's stepmother finally reveals to Jung Woo about his relation to Kang Hyung Joon.
Episode 21
It's the finale, Jung Woo must save Seon Yeon from Kang Hyung Joon's capture.
