Three days before, Se-na and Tae-oh have conflicting ideas on how to seek revenge on Young-won. Se-na enjoys using psychological manipulation to keep Young-won anxious about her son’s secret, while Tae-o believes in a more straightforward approach and suggests revealing Do-hyeon’s secret publicly.
Afterwards, Tae-oh assists Se-na in her plan to take down Secretary An and frame Young-won for the crime. Still, Tae-oh thinks the best way to hurt Young-won is by targeting her family, causing him to falsely accuse Sa-gang. They lure Mr An to the vacation house and after Tae oh chokes him, Se na kills him with a knife and Tae oh cleans up the place to get rid of evidence. Unfortunately, this act disrupts Se-na’s schemes.
Upon discovering Tae-oh’s secret has been revealed, Se-na shifts blame onto him for her wrongdoings by placing incriminating evidence in his apartment and informing the authorities. Kyung-tae reveals to Young-won the true offender in Secretary An’s death, prompting Young-won to devise a plan to trap Tae-oh for the police.
After Tae-oh discovers he fell into Young-won’s trap, he attempts to confront her, but Jae-jin gets in the way. Following a physical altercation with Jae-jin, Young-min, and Seung-jae, Tae-oh is ultimately taken into custody by the authorities.
Young-won goes to see Tae-o in the interrogation room and finds out that when Young-won told Tae-o’s mother to stop talking to his father, she attempted to murder him. This resulted in Tae-o being the only survivor when his family died on that tragic day. This is the reason he holds Young-won responsible for destroying his family. But when he finds out that Se na betrayed him, he goes berserk, unable to believe it.
However, due to Tae-o’s arrest, Sa-gang is released from prison and picked up by Jae-jin. They recall the past, and Jae-jin discloses that he discovered he is not Sa-gang’s child by eavesdropping on his father during a game of hide and seek in his childhood.
He also admitted to feeling worried when Sa-gang decided to leave and wished to be her child for real until the day he dies. The mother and son forgive each other, creating a more solid relationship based on truth and affection. Afterwards, Jae-jin’s aunt cooks dinner for the whole family while they commemorate Sa-gang’s freedom.
Later Jae jin tells Yeong won that Sa kang isn’t his real mother. Although Yeong won is surprised, Jae jin is happy for unburdening himself. Yeong won talks about it with Sa kang who describes how fulfilled she was when she saw Jae jin as a baby. She faked pregnancy in other to make it look like he was her real son. Strangely, It felt like he was really growing in her womb. Yeong won finds her admirable but Sa Kang reminds her not to get sentimental as she shows her the investigative board she had made concerning the current situation.
Sa-gang and Young-won speculate that Se-na could be the true perpetrator of the murder. The following day, Jae-jin encounters Dr. Oh at the clinic and presents her with the opportunity to lead the clinic. Nonetheless, Dr. Oh grows resentful upon realizing that Jae-jin has no intention of leaving his family and blackmails him with the promise to expose his family’s dark truths. Afterwards, Se-na pays her a visit and encourages her to expose the Choi family secrets to the public, which she does while also providing CCTV footage of Dr. Oh carrying out Jae-jin’s surgeries.
Upon learning of Young-won’s family secrets involving Dr. Oh’s ghost surgery for Jae-jin, she is sent a package containing a script to read at an unexpected conference. This is definitely the work of Se-na. Should Young-won back out, Se-na might expose Do-hyeon’s secret. Nonetheless, Do-hyeon supports his mother, advising her to confront Se-na with strength.
During the press conference, Young-won recites from the script before ripping it to pieces. She discloses that Se-na is threatening her family and seeks the assistance of the public in locating Se-na. Young-won is successful in gaining the sympathy of the public through her public appeal. Se-na is clearly annoyed by this, leading her to kidnap Do-hyeon by the end of the episode.
This episode is a nice one. One more left and everything is finally coming to an head.