North Korea's 8th Special Forces hijack a shipment of CTX, a potent new liquid explosive, and threatens South Korea as part of a plot to re-unify the two countries. Ryu and Lee, special agents of O.P., South Korea's secret intelligence service, attempt to track down the terrorists and find the CTX. Meanwhile Hee, the 8th's ultra-bad female sniper, resurfaces to wreak havoc and haunt Ryu.

Released after being wrongfully convicted and imprisoned for 13 years, a woman begins executing her elaborate plan of retribution.

With no clue how he came to be imprisoned, drugged and tortured for 15 years, a desperate man seeks revenge on his captors.

Ji Hoon, who showed great promise as an athlete, is released from jail after serving time for his friend Dong Jin's crime. Dong Jin is now the head of a mob organization and he tries to lure Ji Hoon to work for him. Ji Hoon tries to start over and begins a job in a stable and refuses to work for Dong Jin when Dong Jin's men approach him. But Dong Jin is relentless in his pursuit of his old friend. He will do what it takes to bring Ji Hoon into his organization. As Ji Hoon continues to refuse his offer, Dong Jin gets his one and only sister involved. By using Soo Ah as bait, Dong Jin tries to convince Ji Hoon to come to him. Meanwhile, Dong Jin's father ridicules his younger brother, Dong Suk, being a good-for-nothing ingrate. Dong Suk, in an attempt to prove himself to his family, takes things too far. He takes his brother's men on a raid of a local nightclub.

With the looming free trade agreement between the US and South Korea, even a mafia gang thinks it should become more globalized and professional. Doo-shik is picked to infiltrate a mega corporation and steal their methods for success.