Original: 첫 번째 남자
A drama depicting a life-threatening confrontation between a woman who takes another person's life for revenge and a woman who takes another person's life for her own desires.
Both Suk Hee and Hwa Young become pregnant with the child of Dong Seok, the heir to the Dream Group.
Hwa Young decides to steal Suk Hee's baby after losing hers, while Suk Hee is left with nowhere to go.
When twins are born instead of one, Hwa Young orders the second child eliminated to protect her scheme.
While Suk Hee fights to protect her baby, Chairman Ma sees a picture of Dong Seok and thinks about Suk Hee.
After Bok Gil finds Suk Hee's lost twin, 30 years pass, and fate slowly begins to correct its course.
Jang Mi ends up sharing a taxi with Baek Ho, while Hong Ju is fueled by an inferiority complex toward Seo Rin.
Jang Mi and Baek Ho argue over their swapped gifts, while Hwa Young is uneasy upon hearing the name Suk Hee.
Hwa Young's scheme to identify Suk Hee coincides with Jang Mi's crisis over a destroyed instrument.
Hwa Young becomes anxious about Suk Hee and orders Kang Hyuk to dig into Suk Hee's situation.
Hwa Young puts Suk Hee and her family under surveillance after finding out they've been visiting the villa.
Jang Mi takes on a part-time job at the Dream Hotel, while Hwa Young storms into San Wol's house and hits her.
Jang Mi gets hurt because of Baek Ho, while Hwa Young goes to Suk Hee's shop herself to spy on her.
Hwa Young comes up with a scheme to keep San Wol apart from Chairman Ma, while Tae Pyung finally gets a job.
As Hwa Young orders the banner removed, Baek Ho approaches Jang Mi and Bok Gil with a lunchbox plan.
As Hong Ju resigns, Hwa Young grows uneasy about her motives, while Baek Ho feels drawn to Jang Mi.
Chairman Ma announces that he wishes to live with San Wol, but he faces opposition from Hwa Young and Seo Rin.
Hong Ju gets promoted to team leader after pressuring Chairman Ma. Tae Sook comes back to her family.
Hwa Young's dark past is threatened when she discovers Seo Rin's long-lost twin may be alive.
Baek Ho's jealousy stirs, while Hwa Young rebels against Chairman Ma and walks out of the house.
Hwa Young moves to block Jang Mi from Chairman Ma, as Kang Hyuk secretly proposes a solution.
When a visitor triggers her mother's traumatic memory, Jang Mi's dream opportunity turns into a nightmare.
Jang Mi's discovery of a family lie sparks a dangerous new quest for the truth about her mother's past.
As Hwa Young orders her henchman to silence Jang Mi, Baek Ho finds himself drawn to the very woman in danger.
Jang Mi is thrilled to have her interview with Jun Ho, but Hwa Young panics as soon as she hears about it.
Hwa Young stops Jang Mi from getting to her interview and notices her old hairpin in Jang Mi's hair.
As Hwa Young seeks her lost son, Jun Ho's hidden past emerges and an unsuspecting Jang Mi walks into a trap.
Hwa Young spreads rumors about Jang Mi while visiting her home to find a hairpin tied to their past.
Hong Ju falls for Baek Ho at first sight, as Hwa Young gets shaken by the truth about her son's illness.
Seo Rin tries to spark Jun Ho's jealousy, while Jang Mi and Suk Hee visit Hwa Young to apologize.
Jang Mi's reckless pursuit of a dangerous man leads her into a terrifying trap as Baek Ho races to her scream.
Hwa Young spots a tattoo on Jun Ho while San Wol plans to stalk her. A dark secret is about to be revealed.
Hwa Young finds a clue to her lost son while Baek Ho and Jang Mi fake a relationship for a blind date.
Hwa Young is troubled by Jun Ho's identity, as Jang Mi wavers and Chairman Ma digs into Nam Bong.
Hwa Young finds out that Jun Ho is her son, Ha Neul. Young Ja visits Jang Mi's store and gets shocked.
Hwa Young schemes to make Jun Ho the heir to the Dream Group, while Hong Ju searches Hwa Young's office.
Bok Gil learns Hwa Young is behind everything, but she will stop at nothing to silence him forever.
After a horrifying call, Jang Mi finds her father's accident involves someone dangerously close to her.
As Hwa Young pushes a new plan forward, Hong Ju senses something strange, and family tensions erupt.
A detective closes in as Seo Rin follows a new lead, while Jang Mi and Baek Ho team up for the truth.
Seo Rin pursues her double while Hwa Young reveals a shocking secret about her long-lost son.
Hwa Young plans to eliminate Jang Mi when her daughter Seo Rin's questions threaten a lifelong secret.
Seo Rin uncovers proof of Hwa Young's nature, while a new clue leads Jang Mi to suspect Kang Hyuk.
As Seo Rin uncovers a shocking plot, Chairman Ma uses San Wol and Hong Ju against Hwa Young.
As Baek Ho supports Jang Mi, Hwa Young strikes, and Jang Mi is stunned by Seo Rin's identical face.
After a shocking encounter with her exact double Seo Rin, Jang Mi begins to question her own identity.
Jang Mi meets her twin Seo Rin, whose shocking indifference leads to a dangerous life-swap proposal.
Seo Rin senses Hwa Young's sinister plan and agrees to a risky identity swap with Jang Mi for one day.
As Jang Mi uncovers the full truth, Seo Rin learns about Suk Hee's family amid rising tensions within.
Seo Rin moves to protect Jang Mi, but a fatal miscalculation causes an unforeseen, devastating accident.
After a car crash gives her amnesia, Jang Mi wakes up to discover she is living a new life as Seo Rin.
