Commitment (2013)

A young man becomes a spy to protect his sister

After his father, a North Korean agent, is executed, teenager Li Myung-hoon is forced to follow in his footsteps. Sent to South Korea on a deadly mission, he poses as a high school student while carrying out orders to save his imprisoned sister. But the deeper he goes, the more his loyalty unravels - and the harder it becomes to choose a side.