Hae Ra suddenly has to live with Soo Ho because Soo Ho bought the house Aunt Sook Hee put on the market and she has nowhere else to stay. Meanwhile, Hae Ra finds Sharon in one of her old photos and thinks it's strange that Sharon hasn't aged at all.

Young Mi visits where Hae Ra is staying and runs into Soo Ho. Young Mi suggests having a couples' meeting with Hae Ra and Soo Ho. Meanwhile, Soo Ho meets Baek Hee after a long time and hears a story about the land where he will build a hotel.

Sharon becomes extremely jealous when she finds out that Soo Ho and Hae Ra kissed. Baek Hee invites both Soo Ho and Hae Ra to her book event and tells a story of Soo Ho and Hae Ra's past, but they have no idea that it's their story.

Baek Hee confesses the sin she committed in the past to Sharon, but Sharon doesn't believe it. Soo Ho suggests to Hae Ra to date him for a month and tells her she can dump him if she still doesn't like him then.

Sharon uses Hae Ra's body to mess Hae Ra and Soo Ho's relationship, but it doesn't go as planned. Baek Hee finds out about it and warns Sharon that she might get in a big trouble if she does it again. Meanwhile, Gon asks Ji Hoon to spy on Soo Ho.

Soo Ho is attacked by a motorcycle, but he's saved by Hae Ra. Sharon visits Soo Ho's house to find out if Hae Ra and Soo Ho are really living together. Meanwhile, Baek Hee meets an old friend who knows both Baek Hee and Sharon.

Ji Hoon visits Soo Ho's house for the appointed home training, and Hae Ra is surprised to see him at home. Sharon brings Hae Ra's clothes to Soo Ho's house without any prior notice and meets Ji Hoon there.

Hae Ra tries her best to convince Sharon to work with her, but Sharon ends up hurting Hae Ra. Baek Hee and Sharon get another tattoo because of that. Meanwhile, Soo Ho invites Baek Hee to his house for dinner.

Sharon tells Soo Ho that she won't sell her property unless he lets her stay in his place for a month. Sharon plans to seduce him, but things don't go as planned. Meanwhile, Gon visits Sharon Tailor and asks Sharon to make him a suit.

Sharon shows the articles about Dr. Moon and his lab to Soo Ho, and Soo Ho gets reminded of the fire accident. Soo Ho goes on a live show and announces that he will ask for a reinvestigation on the fire accident.

Baek Hee brings Sharon along to look for Jeom Bok, thinking that finding him would solve their problem. Sharon finds out that Hae Ra has the ring, so she steals it from Hae Ra’s room. Meanwhile, Hae Ra tells Soo Ho about the secret her dad's been keeping from him.

Hae Ra leaves Soo Ho's house because of a letter that Chul Min sent to her. Soo Ho tells Sharon to leave the house right away after finding her looking through his stuff inside his room. Meanwhile, Baek Hee meets the descendent of Jeom Bok at an art gallery.

Sharon hears from Aunt Sook Hee that Soo Ho proposed to Hae Ra. Baek Hee tells Sharon to make a wedding dress for Hae Ra, but Sharon refuses. Meanwhile, a public hearing for Geumseong-dong's redevelopment is held, and Soo Ho faces a huge uproar from the residents who want to redevelop the town.

Baek Hee tells the story of Lady Seo Rin, Myung So, and Boon Yi to Jang Bin and manages to borrow the document that she believes was written by Jeom Bok. Meanwhile, Soo Ho keeps having weird flashbacks and asks Sharon if she has anything to do with it.

Soo Ho is sent to a hospital after getting stabbed by Sharon. Surprisingly, he wakes up without much trouble. Baek Hee tells Sharon to leave the country, so Sharon packs up, but Soo Ho stops Sharon from running away.

Sharon comes back, but she lost her memories of Hae Ra and Soo Ho. She also lost her ingenuity as a tailor, which makes her frustrated. Meanwhile, Soo Ho and Hae Ra have an argument regarding Hae Ra's transfer to the office in Rome.

Soo Ho wakes up without a scratch on his body after the accident. When Baek Hee finds this out, she gets concerned that Soo Ho might have become immortal. After Sharon realizes that she's finally aging, she meets Hae Ra and tells her that Soo Ho has become a monster.

Baek Hee has a hard time recovering from Sharon's attack. Hae Ra and Soo Ho get ready to say goodbye to Baek Hee. Gon wants to save his father from becoming more evil, so he asks Young Mi to confess everything to the police. Meanwhile, Hae Ra tries to figure out a way to turn Soo Ho back to normal, but there seems to be no easy way out.