Kim Ji-hoon

An ex-bodyguard with nothing to lose. Her best friend driven to death. She sets out to take down the man responsible, even if it means doing it all alone.

In Incheon, a veteran detective who relies on intuition and contacts teams with a logical young hotshot who uses evidence to analyze criminals' minds.

As the people of South Korea are whipped into a frenzy for a World Cup match, North Korea attacks one of their patrolling boats on the disputed Northern Limit border at sea, sparking the Second Battle of Yeonpyeong in 2002.