IU finally meets her biological mother Lee Mi Sook.
March 24, the 6th episode of the KBS weekend drama "You're the Beset Lee Soon Shin" featured Shin Yi Jung (Bae Green) makings sarcastic remarks at Lee Soon Shin (IU).
After learning about the fact that her older brother Shin Joon Ho (Jo Jung Suk) is trying to get Lee Soon Shin to sign a contract, Shin Yi Jung decides to get involved. Shin Yi Jung shows up at the restaurant Lee Soon Shin works and asks her what she did to seduce him. When she gets angry, she spills coffee on herself and blames Lee Soon Shin.
Shin Yi Jung tells her to pay for her clothes and adds, "This is why education from your parents is important. Is that what your father taught you? Apologize right now." Lee Soon Shin replies, "I need the apology." When Shin Yi Jung tries to pour water on her, Lee Soon Shin blocks it.
The water spilled all over Shin Yi Jung and Lee Soon Shin hesitates. Shin Yi Jung begins to shout when Song Mi Ryung (Lee Mi Sook) appears at the restaurant.
Lee Soon Shin is shocked after she sees Song Mi Ryung.