Young-won and Sa-kang shift Ji-eun to Honghak Hospital, which is just a stone's throw from their vacation home. Together, they brainstorm every conceivable scenario of what could've befallen Ji-eun and Jae-jin. While Young-won harbours suspicions about her mother-in-law due to the odd occurrences of late, she deems it crucial to join forces with her to locate Jae-jin first.

Although Young-won is unhappy about Sa-kang concealing his affair from her, they prioritize gathering clues to find Jae-jin. Following these leads, they eventually arrive at Yokji Island. Shortly after getting there, they hear about a submerged car being found in the sea. Sa-kang immediately questions whether it's the vehicle her son rented.

Young-won empathizes with Jae-jin, coming to terms with his passing. However, Sa-kang struggles to accept the reality of her son's demise, pushing for an ongoing search. Eventually, news of Jae-jin’s incident spread, fueling rumours linking the missing person to Young-won’s family. As a crowd of reporters converges outside her house, her remaining family grapples with another crisis.

Young-won and Sa-kang question what Se-na’s motives could have been for approaching Jae-jin. Sa-kang believes Se-na was targeting her, but Young-won thinks otherwise. Meanwhile, filled with more hatred toward Jae-jin than ever, Young-won shifts her focus to protecting her son. The pieces of the puzzle begin to fall into place, revealing the essence of Jae-jin’s disappearance, but Young-won’s anxiety only grows.

Jae-jin's return home leads Young-won to question why Se-na chose to send him back. Young-won initiates a deeper investigation into Se-na's identity. Meanwhile, Sa-kang is pleased that her son has returned. Jae-jin then gathers the family in the dining room and unveils the family's secrets one by one.

Young-won is solely focused on her son, Sa-kang is always thinking about what's best for her son, and Ji-eun is determined not to lose Jae-jin. With all these obsessions under one roof, Young-won's family begins to fall further apart. Adding to the turmoil, So-yi visits Young-won, revealing she is pregnant with Do-hyun's baby. Young-won realises it's time to confront Se-na directly to protect what's left of her family before it’s too late.

After watching Young-won's threatening message, Se-na appears at the broadcast station. Filled with rage, she grabs Young-won by the neck in a manner suggesting an attempt to harm her. Fortunately, the police arrive just in time to rescue Young-won and arrest Se-na. Young-won subsequently searches for evidence to prove Se-na's crimes and ensure she remains in custody, but it proves to be a challenging task.

Sa-kang gets framed for killing An Yo-sub. Based on the evidence found at the scene, it is difficult for Sa-kang to avoid the charge. Jae-jin reveals to Young-won that he thinks Tae-oh approached him intentionally. Young-won finds out that Tae-oh is using a fake name and that he is actually Oh Tae-hwan, the older twin brother of Oh Ji-hwan.

It turns out Se-na killed Yo-sub to frame Young-won for murder. However, Tae-oh meddled in to put the blame on Sa-kang. Young-won lures Tae-oh into her house, and he gets caught in the end. Tae-oh blames Young-won for destroying his family. Meanwhile, Se-na approaches Ji-eun and convinces her to expose Jae-jin’s family's secrets.

While Young-won holds a press conference, Sa-kang visits Tae-oh in prison and makes him confess that it was Se-na who killed Yo-sub. Se-na kidnaps Do-hyun to lure Young-won to the vacation home. Jae-jin confesses that Ji-eun performed ghost surgery for him and gives up his license. Meanwhile, Sa-kang decides to leave the family.