- IU as Lee Soon Shin
- Go Doo Shim as Kim Jung Ae
- Jung Dong Hwan as Lee Chang Hoon
- Kim Yong Rim as Shim Mak Re
- Son Tae Young as Lee Hye Shin
- Yoo In Na as Lee Yoo Shin
- Jo Jung Suk as Shin Joon Ho
- Kim Gab Soo as Shin Dong Hyuk
- Go Joo Won as Park Chan Woo
- Lee Mi Sook as Song Mi Ryung
- Kim Yoon Seo as Choi Yun Ah
- Jung Woo as Seo Jin Wook
- Lee Ji Hoon as Kim Young Hoon
- Lee Ji Hoon as Jo In Sung
- Yoon Da Hoon as Hwang Il Do
- Bae Geu Rin as Shin Yi Jung
The drama starts with Soon-shin asking Mi-ryung that does she really think that she has potential to be an actress. Mi-ryung says yes, which makes Soon-shin really happy.
Chan-woo’s dad is still outside Mi-ryung’s house and when Soon-shin comes out he asks if she knows Mi-ryung. She tells him the truth that Mi-ryung is her acting teacher and mom doesn’t know about this.
Manager Wang asks Mi-ryung if she is going to spend her precious time on teaching Soon-shin. She answers that she is doing this to make Yi-jung give up her desire to become an actor. But she likes Soon-shin, but doesn’t know why.
Soon-shin asks mom if she can try acting, but mom strictly refuses.
Next day, Soon-shin goes to gym for exercise and sends her picture to Joon-ho (as he told her earlier to do so.) Joon-ho receives her message and he is extremely happy that Soon-shin did not resign. He goes to meet her at the restaurant and asks if she got her mom’s permission. She says that she didn’t but will take it later as she really want to try acting.
Chan-woo’s mom tells Soon-shin’s mom to work in her restaurant, but she hesitates.
Grandma tells mom to place their store room on rent as they will be able to earn some money by doing so. Mom cleans the room and Chan-woo’s dad offers help to paint and put wallpapers there. He also tells mom to never allow Soon-shin to act.
Yi-jung takes her mom’s help to convince Mi-ryung to treat her nicely and leniently. Mi-ryung tells her that if Yi-jung thinks so, she can stop dreaming about this field as it’s not only about glamour, but also includes hard work.
Yun-ah comes to know from Mi-ryung that Joon-ho’s dad is a famous dermatologist. She is surprised as Joon-ho told her that his parents passed away.
Yi-jung goes to her dad’s clinic thinking that she might be able to meet Chan-woo, but dad tells her that she doesn’t need any treatment.
Mi-ryung takes Soon-shin and Yi-jung to a play. Soon-shin pays attention, but Yi-jung feels sleepy. Mi-ryung notices this.
Soon-shin’s mom calls her and she makes excuse of having dinner with her friends. Later, she tells Mi-ryung that her mother is her fan.
Chan-woo helps decorate the room with wallpapers and he and his dad have dinner at Soon-shin’s home. Yoo-shin also comes from work. Everyone asks him about his arranged date, and he feels awkward.
Chan-woo goes to the room to finish up remaining work. Yoo-shin comes there and asks about the girl he met on date. He says that she is pretty. Yoo-shin tries to be friendly but he doesn’t like it and ignores her.
On his way home, Chan-woo again meets Yoo-shin who tells him that he can take advice from her on dating. He refuses and tells her not to hold onto him. Soon-shin sees this, so does Joon-ho.
Joon-ho takes Soon-shin to a coffee shop and tries to console her by saying that guys like Chan-woo love to flirt with girls by being nice to everyone. Also, he will regret by losing a girl like Soon-shin. He also gives her some books and CDs to study.
Grandma tells mom about Kyung-sook that she wanted to become an actress. Mom again goes into deep thinking.
Yoo-shin tells Soon-shin that she saw that man outside when he was waiting for her. Soon-shin confesses the truth that he is Shin Joon-ho, and she has signed contract with him. Also, Mi-ryung is her acting teacher.
Next day, Yoo-shin takes Hye-shin to Joon-ho’s office in order to check whether he is a genuine agency head or a swindler. They meet Soon-shin first and then go to his agency. They see the contract and Hye-shin recommends some changes. Finally, they are convinced that he is indeed Shin Joon-ho. They plan to tell mom about it later.
Grandma falls on the street and the bakery shop owner Jin-wook comes there to help her. Woo-joo also sees them. He asks her why she lied about her dad, but she doesn’t answer. We also come to know that Jin-wook once went to jail.
Chan-woo’s mom doubts that her husband is having an affair. She follows him secretly and sees that he is looking at Mi-ryung’s house. She confronts him. He admits that actress Song Mi-ryung is actually Kyung-sook and she was his childhood friend from his hometown.
Mom sees the script in Soon-shin’s room. She thinks about Kyung-suk wanting to be an actor. Soon-shin comes and mom asks her about it. Soon-shin says that can’t she even try. Mom is already tensed and so she shouts at her that how can she do this stuff and do whatever she wants. She throws all her books and CDs.
Mom remembers about Chan-woo’s dad when he said that never let Soon-shin become an actress. She goes to ask him, where Chan-woo’s mom tells her about Song Mi-ryung being Kyung-sook. Mom is shocked to hear this.
- You’re The Best Lee Soon Shin (Episode 10)
- You’re The Best Lee Soon Shin (Episode 9)
- You’re The Best Lee Soon Shin (Episode 8)
- You’re The Best Lee Soon Shin (Episode 7)
- You’re The Best Lee Soon Shin (Episode 6)
- You’re The Best Lee Soon Shin (Episode 5)
- You’re The Best Lee Soon Shin (Episode 4)
- You’re The Best Lee Soon Shin (Episode 3)
- You’re The Best Lee Soon Shin (Episode 2)
- You’re The Best Lee Soon Shin (Episode 1)