Homemade Love Story

Sun Jeong shares the same birthday as her three kids, Bit Chae Woon, Hae Deun, and Ra Hoon, so they plan to have a big party in the evening. Sun Jeong's sister Man Jeong visits the family to celebrate her birthday. Somehow, Chae Woon isn't too happy to see Man Jeong. Jae Hee goes to see Jung Won and Seo A be with them on a special day. Meanwhile, Chae Woon gets a call she's been waiting for.

After Bit Chae Woon meets a woman who could be her biological mother, she feels sorry for Sun Jeong. Sun Jeong thinks the woman who had approached her is strange, which leaves her feeling unsettled. Meanwhile, Bit Chae Woon's siblings discover she is looking for her biological mother, which starts a huge argument among them.

Out of anger and frustration, Chae Woon heads to the CEO of LX Fashion's house. At the gate, she faints, and Jung Won takes her in. Jung Won promises Chae Woon that she'll look into the case. Later, Jung Won calls Chae Woon into the office to explain the evaluation process. Even after hearing the explanation, Chae Woon still wants to prove her innocence, so Jung Won offers her an internship instead of giving her the prize.

Chae Woon loses her patience and lets all her frustration out on Sun Jeong. Hae Deun, Ra Hoon, and Man Jeong stick up for Sun Jeong, but they each get a taste of the painful stories she had been keeping inside. Man Jeong, who gets the worst of it, goes out drinking solo and returns on Hwak Se's back. The next day, Chae Woon realizes she's lost her cell phone.

Jae Hee is welcomed by everyone at Samgwang Villa. Chae Woon starts working at LX Fashion and has a hard time getting up to speed. A new tenant moves into the basement floor of Samgwang Villa. When Jae Hee recognizes him, he's very suspicious of his intentions. Sun Jeong helps out with the party at her boss' house and runs into Jung Won. Jung Won recognizes Sun Jeong.

After reuniting with Jung Won, Sun Jeong, without knowing, feels immensely guilty about her happiness to see her. Jae Hee is thrown into a storm of confusion when he learns about Chae Woon's past, and Min Jae shouts a startling remark at Jung Hoo, who had been secretly tailing her. Meanwhile, Chae Woon confronts Seo A when she sees she was deliberately excluded from the interns' presentation.

Jung Won receives a mysterious call regarding her lost daughter. She's shaken over it. Hae Deun causes trouble again, and this time, she used Man Jeong's credit card without permission. Out of frustration, Man Jeong leaves Samgwang Villa. Chae Woon looks for Park So Mi, the girl who framed her for bullying Seo A back in middle school. However, So Mi pretends not to know about it. Meanwhile, Min Jae sends her divorce lawyer to Jung Hoo.

Sun Jeong gets Chae Woon to tell her what's going on, and Chae Woon explains it's about Seo A. Jae Hee finds out where So Mi, Seo A's middle school friend, works and tells Chae Woon. Later, Jae Hee tries to talk some sense into his dad, but instead, he ends up renouncing his inheritance. Meanwhile, Chae Woon visits So Mi and Hae Deun auditions for Slight Entertainment.