"You're the Best Lee Soon Shin" IU's biological mother Lee Mi Sook decides to make a secret deal to get her a role in a drama.

April 27, the 15th episode of the KBS drama "You're the Best Lee Soon Shin" featured Song Mi Ryung (Lee Mi Sook) feeling bothered by what Kim Jung Ae (Go Doo Shim) and trying to hurry Lee Soon Shin's (IU) debut.

Kim Jung Ae completely ignores Song Mi Ryung's proposal to train Lee Soon Shin to become an actress. Kim Jung Ae then goes to Lee Soon Shin and says, "Choose right this moment. Go home with me or leave to go learn that thing."

Lee Soon Shin replies, "I have an audition in a few days. I'll just do that and then choose." Kim Jung Ae then says, "You're saying that you'll never see me again, right? Okay. I understand."

Song Mi Ryung however tries to push Lee Soon Shin to keep pursuing this route. She tells Lee Soon Shin, "Let's make a great debut to show your mom." Song Mi Ryung then meets a director of a drama and says, "That role of Eun Young, I heard there will be an open audition? Can you leave that to me? To be honest, there is a new actress I'm training right now."

The director replies, "That is my decision". Song Mi Ryung threatens the director by saying, "She will be perfect for that role. Don't you trust me? Then I'll have to rethink my decision to star in the drama." Without any choice, the director decides to go with what Song Mi Ryung says.