Jeong Jun-ho

An eccentric but faithful mafia, Chi-sung is sent to prison for his part in a gang fight. But when his parents are attacked by a rival mob and his own people take no action, he realizes that a decade of loyalty towards the gang has become futile. Determined to confront his own boss, he finds a way to escape from prison with his fellow inmates. Meanwhile, his friend Joo-joong is given the task to stop Chi-sung, forcing him to choose between the bond of friendship and loyalty towards the gang.

Hyunjun and Sawoo, close friends and rivals from the South Korean special forces, are recruited by the secret agency NSS. They both fall for Seunghee, the beautiful but lethal profiling specialist at NSS. When they are faced against each other in a nuclear terrorist attack, they are forced to make their final decision and Seunghee's formidable secret is revealed.

A squad of soldiers fight in the Korean War's crucial Battle of Incheon.