She's on Duty

A boisterous detective goes undercover in a high school in order to befriend the teenage daughter of a notorious gangster.

• 
  Kim Seon-a

  Chun Jae-in
• 
  Gong Yoo

  Kang No-young
• 
  Nam Sang-mi

  Seung-hee
• 
  Kim Sang-ho

  Detective Kang
• 
  Noh Joo-hyun

  Detective Chun
• 
  Hong Soo-ah

  Jo Hye-ryung
• 
  Oh Kwang-rok

  Bae Doo-sang
• 
  Park Sang-myeon

  Class Teacher
• 
  Kim Kap-soo

  Cha Young-jae
• 
  Ha Jung-woo

  Detective Cho