Agent Jon contemplates leaving the force until he learns his brother is working as a mercenary for a former colleague who betrayed their team.

A police sniper teams up with a hot-headed rookie to take down his former friend and teammate, who is exacting revenge on the police force.

Korean War, winter 1950. In the frozen and snowy area of Changjin Lake, a bloody battle is about to begin between the elite troops of the United States and China.