خلاصه داستان : فیلم داستان یک جاسوس کره ی شمالی است که پس از اتمام مأموریتش در کره ی جنوبی، در آروزی بازگشت به کشورش و ملاقات با پسر و دخترش است. اما از سوی کشور خودش، به او خیانت می شود. اکنون پسرش تصمیم می گیرد برای محافظت از خواهر کوچکش پا جای پای پدر بگذارد و...

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.