However, the next day, Sara still does not feel comfortable when Gi Jun comes to work at Solution. Gi Jun says he is here not because of her and that he will work for three months; if Sara still feels uneasy, he will resign. Later, after both become less awkward, the Solution team starts working on Soo Won's divorce case. Dae Ki, a womanizer, knows many female employees at the broadcasting station and uses that to gather a lot of evidence about Jae Kook, Joo Won's husband, flirting and harassing many female colleagues at the station. Meanwhile, Yul Seong hears that Sara is the team leader defending Jae Kook's wife, and the person leading the defense is Gi Jun. Yul Seong becomes curious and sends someone to learn more about this collaboration. Fortunately, Sara finally finds information about her son Seo Yun; it turns out the boy is on Jeju Island. She flies there immediately and goes to the house where the boy stays, but no one lets her in. Sara waits outside until evening when the housekeeper opens the door and asks her to leave, but Sara takes the opportunity to rush into the house and look for Seo Yun, though she does not find him. The housekeeper tells her that if she does not leave immediately, she will call the police, and Sara has to walk away, unaware that she is only a step away from her son because the boy is wearing headphones and watching a tablet with his teacher. Sara returns to Seoul the next day and receives news that Jae Kook has been assaulted at his office. Sara goes to the Solution office and sees Joo Won there talking to Gi Jun. Joo Won denies being at Jae Kook's office when the assault happened. However, Kang Bom and Dae Ki manage to get the black box footage from a popcorn truck nearby at the time of the assault. They buy a lot of popcorn and bring the video back to Solution. They watch the video together and discover that both Joo Won and Min Hee, who had accused Jae Kook of harassing her, were present at the scene when the assault occurred. Sara confronts Joo Won about lying to them, but Joo Won says she went to her husband's office but then changed her mind and did not enter, going to the rooftop instead because she was upset. It turns out that Joo Won knew Min Hee would meet Jae Kook that day, so she went there to confront Min Hee but then did not have enough courage to go inside. Sara lost trust in Joo Won and asked to withdraw from the case, but when Jae Sook woke up, he claimed he had been assaulted by a group of people, and Sara realized Joo Won had been telling the truth. Yul Seong met with Sara and said they knew she was trying to find Seo Yun. He threatened Sara using his mother's plan to send Seo Yun abroad as leverage in Jae Kook's case, saying if she dropped the case, he would convince his mother not to take Seo Yun abroad. Yul Seong also questioned the collaboration between Sara and her ex-boyfriend, Gi Jun. While he was raising his voice at her, Gi Jun showed up and rescued Sara.

Later, Yul Seong met with a member of his five-member society, who said that Yul Seong's father-in-law was involved in a corruption scandal and had fled, and they would not be able to change the law as planned. One day, Sara looked at photos of Joo Won before and after their marriage and realized their marriage had issues from the start. Sara met with Joo Won again, and Joo Won revealed to Sara that she had also been harassed by Jae Kook, and after getting pregnant, she married Jae Kook. The message Joo Won posted online was fake because she didn't want her daughter to be known as the child of a corrupt person. Now, Joo Won deeply regrets that public opinion has shifted to wrongly accuse Jae Kook and label Min Hee as a homewrecker. Sara says that Joo Won must bring Jae Wook's harassment to light, but Joo Won refuses because she doesn't want Soo Ji to suffer any more. Meanwhile, Jae Kook accuses Min Hee of assaulting him. Gi Jun watches the news video and sees a drone operating near the building. Luckily, he knows the group using the drone and goes with Sara to meet them. The guy tries to escape, but Gi Jun and Sara finally catch him after a struggle. They take the video from him and check it, finding out Joo Won is indeed on the rooftop, and Min Hee, although she approaches the building, does not enter. So, Jae Kook is lying. At the end of the workday, Joo Won's story makes Sara remember her own past story, the reason she didn’t run away with Gi Jun before their wedding day was because she was pregnant with Yul Seong. The next day, Kang Bom and Dae Ki come to report that Chayul had set up Jae Kook by bribing Min Hee's lawyer to arrange for her to go to his office that day to settle things. Luckily, Min Hee feels something is off and does not go inside. Joo Won is also there and kneels down to apologize to Min Hee. Although Min Hee does not want to forgive Joo Won, Sara suggests they collaborate to bring to light the terrible things Jae Kook has done. Joo Won meets with Jae Kook at the hospital and pressures him to admit to coercion 18 years ago. As he is still pretending to be innocent, Min Hee enters and says they will both accuse him in court. Jae Kook drops his mask, revealing his coercion of both. Joo Won secretly records the entire scene and sends it to Sara. She and Gi Jun go to Chayul and use the video to make them withdraw from the lawsuit related to Jae Kook. Afterward, Dae Ki and Kang Bom go to the hospital where Jae Kook is being treated, pretending to be a doctor and a nurse. They manage to bring to the rooftop. There, Joo Won and Min Hee push his wheelchair close to the railing, and fearing death, he quickly jumps down, revealing that Jae Kook is not injured at all. It turns out the hospital also has connections with Chayul and had faked his injury assessment. Of course, afterward, Joo Won and Min Hee win their lawsuits, and Joo Won and her daughter move abroad, leaving the unpleasant matters behind. Right after Sara calls to congratulate them, a new client comes to Solution. To her surprise, it is Yul Seong's new wife: Han Ji Jin.