Watch My Happy Ending

Yun Jin kidnaps Ah Rin and taunts her with dangerous questions. Reinstated as Derêve’s CEO, Jae Won meets a key figure at her villa. Ready to face her past, she makes a selfish request to Te Oh.

Jae Won seeks a witness who could turn the trial. Teaming up with Tae Ju and Detective Oh, she confronts Yun Jin—who plans to eliminate Tae Ju. Jae Won offers her one last chance to confess.

Convinced Yun Jin is behind it all, Jae Won moves to bring her down. Meanwhile, Chang Seok faces prosecution for his wife's murder. Tae Ju offers Jae Won a deal: capture Yun Jin to save her father.

Jae Won fakes her own kidnapping to ensnare Yeong Ik. He remains unaware of Jae Won's involvement while being summoned to a parliamentary audit. Later, Yun Jin visits Jae Won with a package, unleashing a shocking discovery.

To expose Young Ik and Yun Jin, Jae Won makes a risky move. While she approaches a political heavyweight, a desperate Young Ik lashes out. Meanwhile, Detective Oh finds flaws in Yun Jin's alibi.

Jae Won is admitted to a psychiatric hospital while Yun Jin takes over as Derêve's CEO and stays close to Ah Rin. With a new detective assigned to Sun Yeong's case, things take a new turn.

Evidence found at Sun Yeong's murder scene matches a purchase by Jae Won. As Derêve’s board debates her dismissal, Jae Won listens to Sun Yeong's final voice message and pieces things together.

Realizing that people are hiding secrets from her, Jae Won becomes increasingly unsettled as Yun Jin's interference worsens the situation. Then, Jae Won is suddenly arrested for Sun Yeong's murder.

Jae Won loses her memory and becomes a different person. After discovering her medication, Sun Yeong uncovers disturbing truths. Meanwhile, Yun Jin takes the amnesiac Jae Won on a secluded trip driven by revenge.

Jae Won is shocked while recalling the events of the launch party. As Sun Yeong ousts Yun Jin for denying Seung Gyu's accident, Yun Jin devises a new plan.

Jae Won learns that hiding a history of mental illness from a spouse could justify divorce. As Sun Yeong investigates her, Jae Won struggles to keep her secrets hidden.

Jae Won and Sun Yeong fight over their daughter Ah Rin's custody. Learning that spouse-at-fault could gain custody, she offers him poisoned wine. However, an old secret between Tae Oh and Jae Won resurfaces.

Jae Won finds the existence of Sun Yeong's twin brother suspicious and follows him. During a family dinner, she reveals Yun Jin's romantic relationship, and Sun Yeong openly congratulates her.

Te Oh witnesses Yun Jin and Jae Won's husband Sun Yeong at a hotel and confronts them. Meanwhile, the stalker's identity is revealed but Jae Won's brakes unexpectedly fail while driving.

Jae Won begins plotting revenge. She asks investigator Tae Ju to look into her mother's death and attends an alumni reunion after learning that her former friend Yun Jin is there.

Seo Jae Won, CEO of furniture company Derêve and popular influencer, begins receiving threats from a longtime stalker. As danger grows, she uncovers shocking truths about those closest to her.