The son of a North Korean spy decides to follow in his father's footsteps to protect his little sister. After his father's botched espionage mission, North Korean Myung-hoon and his young sister Hye-in are sent to a labor prison camp. In order to save his sister's life, Myung-hoon volunteers to become a spy and infiltrates the South as a teenage defector. While attending high school in the South, he meets another girl named Hye-in, and rescues her when she comes under attack.

• Golden Fish Pictures
• The LAMP
• Choi Seung-hyun
• Han Yeri
• Yoon Je-moon
• Cho Seong-ha
• Kim You-jung
• Lee Joo-sil
• Jung Ho-bin
• Kim Sun-kyung