Based on a true story of Jangsari Landing Operation, 772 student soldiers – whose average age was 17 and who received just 2 weeks of boot camp training – were tossed into Korean War effort in order to pave the way for Incheon Landing Operation, which turned the tide of war.

The film will follow Princess Songhwa, who refuses her fate to marry one of four suitors. While Seo Do-yoon, skilled at interpreting marital harmony signs is selected as the person to ascertain her best match.

Set in the future, South and North Korea agree to set up a unified government. They have prepared for the unification for the past 7 years. Meanwhile, demonstrators, supporting and opposing the unification, become more fierce. A group against the unification commit terrorist acts. A special police force is formed in response.