Cheer Up, Mr. Lee

Chul-soo is a man with an intellectual disability. One day, Chul-soo finds out that a young girl, Saet-byul, who is in hospital is his daughter. And soon, Saet-byul sneaks out of the hospital and travels by herself to a faraway city for her friend's birthday. As Chul-soo accompanies Saet-byul's journey, friendship develops between the two.

• 
  Lee Kae-byeok

• 
  Cha Seung-won
  Cheol-su
• 
  Um Chae-young
  Saet-byeol
• 
  Park Hae-joon
  Yeong-su
• 
  Kim Hye-ok
  Hee-ja
• 
  An Kil-kang
  Mr.Kim
• 
  Jeon Hye-bin
  Eun-hee
• 
  Ryu Hanbi
  Min-jeong
• 
  Ryu Han-bi
  Min-jeong
• 
  Cho Han-cheul
  Deok-gu
• 
  Cho Han-chul
  Deok-gu
• 
  Sung Ji-ru
  Jeong-kwon
• 
  Kim Beop-rae
  Mr. Yang
• 
  Kim Pub-lae
  Mr. Yang
• 
  Jung Won-joong
  Fire Marshal
• 
  Shin Hyun-been
  Hye-yeong
• 
  Ji Su-yeon
  Ji-an
• 
  Lee Seung-Won
  Deok-su
• 
  Oh Tae-kyung
  Ki-seop
• 
  Jung Jun-won
  Chung-sik
• 
  Jung Hee-tae
  Policeman
• 
  An Min-young
  Hyun-sook
• 
  Hwang Sung-joon
  Underling
• 
  Lee Seung-yuop
  Seung-yeop