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비밀의 여자
Jung Gyul Wool loses her vision and ability to walk because of her materialistic husband and his mistress. Despite her shortcomings, she hatches a plot to seek revenge.
After tying the knot with Yu Jin, Gyeo Ul moved in with him and his family. However, despite being her first birthday since the wedding, nobody in the household appears to have remembered or acknowledged it. Pressured by her mother-in-law to start a family, Gyeo Ul chooses to stop taking her bronchial medication. Meanwhile, Se Rin reunites with Tae Yang after a three-year absence, but he doesn't seem pleased to see her again.
Gyeo Ul is looking forward to her upcoming trip to a resort with Yu Jin, but she is unaware that Ae Ra, who she trusts the most, and is Yu Jin's mistress, will also be there. Tae Yang is unable to forgive himself for hurting someone and is experiencing great emotional pain because of it. Se Rin makes a foolish decision to help Tae Yang, but it leads to unforeseen condequences.
Young Ran has been robbed by a pickpocket at the department store, and she suspects Tae Yang. When she finds out that Tae Yang has a criminal record, her suspicion turns into conviction. However, Gyeo Ul tries to clear up the misunderstanding which makes Young Ran take her anger out on her.
Even though Hyun Tae forgives Yu Jin, he treats Gyeo Ul even more disrespectfully as soon as they leave his place. Se Rin blows up when Se Yeon sets her up on a blind date, and Se Yeon asks Tae Yang to move out of their house. Meanwhile, Ae Ra plots a scheme to sabotage Gyeo Ul to put out the affection Man Joong has for her.
Gyeo Ul investigates the earring and discovers that Yu Jin was its purchaser. Although Yu Jin and Ae Ra's deceitful explanations almost convince her, Gyeo Ul overhears something about Ae Ra's weekend activities that makes her suspicious. Meanwhile, Tae Yang informs his family of his desire to return to the sea, prompting Se Rin to initially react strongly but quickly compose herself and enact her backup plan to prevent Tae Yang from leaving.
Se Rin's blind date turns into a mess when Tae Yang takes the beating from her date while protecting her. Meanwhile, Ae Ra is consumed with worry that Gyeo Ul may acquire access to the corridor surveillance footage in the resort. As anticipated, Ae Ra doesn't think twice before putting Gyeo Ul to sleep in order to dispel her doubts with what she thinks is a foolproof scheme.
Se Rin finds out that she and Tae Yang have been deceived. In fact, Tae Yang has nothing to do with the murder charge he's been sentenced with. Se Rin right away looks deeper into the case, hoping to find evidence to prove Tae Yang's innocence. Meanwhile, the car accident was critical enough to take away Gyeo Ul's sight. On top of that, she needs to make a life-changing decision that involves tradeoffs.
Yu Jin shows up at the hospital late after Gyeo Ul gives birth to their daughter. As Hyun Tae witnesses Yu Jin and Ae Ra together in front of the hospital, he can't shake off his concern for Gyeo Ul. Meanwhile, Se Yeon digs into the accident five years ago and finds out there was a real culprit who framed Tae Yang.
Yu Jin kneels down in front of Hyun Tae and begs for forgiveness, which disappoints both Hyun Tae and Ae Ra. Hyun Tae visits Gyeo Ul the next day with a heavy heart, and Yu Jin's nerves are on the edge. Meanwhile, Se Yeon gets the actual name of Jang Mi through a detective agency and wants to meet her in person.
When Se Yeon visits her with a barrage of questions, Ae Ra lies to escape a difficult situation. Se Rin, frustrated at not being able to clear Tae Yang's name, take it out on Se Yeon, leading to an argument. Meanwhile, Hyun Tae suspects an affair and follows Yu Jin, only to discover something strange about Gyeo Ul's bronchial medicine.
After their misdeeds are revealed, Yu Jin and Ae Ra are in a difficult situation. They convince Hyun Tae that they can expedite Gyeo Ul's corneal transplant schedule to prevent him from exposing their secrets. Although hesitant at first, Hyun Tae ultimately agrees with their plan. Meanwhile, Se Yeon delves deeper into Ae Ra's background and takes a step that goes too far.
Ae Ra covertly places what seems like a murder weapon inside Hyun Tae's car, which leads to his eventual arrest for murder. But just as she believes that the situation is under control, Ae Ra becomes the victim of blackmail by someone from her past who has a grudge against her. At the same time, Se Rin discovers Se Yeon's past and feels remorseful for how she has treated her lately.
Hyun Tae asks Yu Jin to come clean about his affair with Ae Ra to the police to defend himself from the false accusation of murder. Furthermore, Young Jun is searching everywhere for the organ trafficker, so Yu Jin and Ae Ra have to come up with another lie. Meanwhile, Se Rin gets infuriated at Se Yeon's funeral and is determined to take revenge for her.
After her recent failure to seek revenge, Se Rin becomes even more determined to take extreme measures to achieve it. However, Tae Yang tries to prevent her from making impulsive decisions. Meanwhile, Hyun Tae is being held in solitary confinement by a corrupt officer at the detention center, and Ae Ra seeks alternative methods to make her family give up on Gyeo Ul.
Ae Ra plans to convince Gyeo Ul to visit her imprisoned father secretly, intending to separate her from her daughter So Yi and isolate her from the family. Gyeo Ul later discovers her daughter is missing and cannot find her. Meanwhile, Se Rin's uncontrolled rage leads her to inflict more pain on Hyun Tae's family than she herself is experiencing.
Gyeo Ul cannot deny the fact that she lost So Yi because of her. Not realizing how Ae Ra is behind the mess, Gyeo Ul decides that it would be better for her to stay at her parents' house until she finds So Yi. As Se Rin pursues her vendetta, Gyeo Ul becomes her next target. Later, an anonymous caller informs Gyeo Ul about a dashcam video that captures the woman who took So Yi.
Hyun Tae gets infuriated as he finds out it was Yu Jin and Ae Ra who stopped him from making calls and getting visitors, not Se Rin. Since he has no chance of getting in tough with anyone, he decides to break out of jail.
Hyun Tae collapses and is transferred to a public hospital as he did not take his pills. Meanwhile, Gyeo Ul and Young Jun try to sort things out while their father is hospitalized. Gyeo Ul tries to find out if the camera footage she saw at the resort is manipulated or not. Young Jun gets a lead on the organ trafficker who can confirm Hyun Tae's alibi.
Upon learning about Gyeo Ul's cornea transplant operation, Ae Ra formulates a scheme to deliberately sabotage it. When the surgery is unsuccessful, Ae Ra and Yu Jin openly ridicule Gyeo Ul, believing that as a blind person, she is powerless to retaliate. Despite facing opposition from all sides, Gyeo Ul remains steadfast in her resolve to hold Ae Ra and Yu Jin accountable for their actions.
Ae Ra wasn't sure if Gyeo Ul has regained her sight back or not, but she eventually figures it out. Now that she knows, she takes other measures to keep her quiet. While doing so, Ae Ra also finds out that she has something that doesn't belong to her and turns to even more extreme measures. Meanwhile, Se Rin realizes that Tae Yang was being honest when he said he wanted to go aboard with her.
