Kim Hyeon-Jun and Jin Sa-Woo, fall for the same woman who has chosen the both of them to be new members of a secret a...

For their first assignment, Hyun Joon and Sa Woo must stop a planned assassination on the South Korean President.

After saving the President's life, Kim Hyun Joon, Choi Seung Hee, and Jin Sa Woo are granted a vacation. But Sa Woo i...

Hyun Joon is given a solo assignment to assassinate a North Korean minister. But his actions could have him become th...

Hyun Joon is accused of being a spy. Now the NSS, North Korean Security, and the Hungary Police are all after him.

6-months after Hyeon Jun is believed to be dead, North Korea finds out that he is actually in Japan. Park Chul Young ...

Seung-Hee believes that Seon-Hwa knows Hyun-Jun's whereabouts and follows her back to Japan. Meanwhile, Hyun-Jun is b...

A mysterious man has been trying to track down Hyun-Jun because of a USB drive that he received from the late Hong Se...

Kim Hyun-Jun asks for Park Cheol-Yeong's help in getting his revenge on the NSS for abandoning him. Cheol-Yeong will ...

Hyun-Jun and Cheol-Yeong's men set up a wild goose chase for the NSS so that they can break into NSS headquarters wit...

Hyun-Jun finally discovers that Seung-Hee is still alive. He escapes, with the terrorists, from NSS with a piece to a...

Hyun-Jun makes contact with the secret man that saved his life in Hungary, in order to find out more about IRIS and h...

Seung-Hee and Hyun-Jun are reunited. But the terrorists force Hyun-Jun to interrogate her for information. Meanwhile,...

Park Sang-Hyeon and Seung-Hee are beginning to suspect Sa-Woo and Baek San of being traitors. Park Cheol-Yeong is sta...

Park Cheol-Yeong joins Hyun-Jun and an unknown organization to stop the terrorist attack on Seoul. But first, they mu...

The President has ordered Young Ki Eun's arrest. But when he turns up dead, the President orders Sa Woo and Baek San'...

The terrorist attack has been stopped and the future is looking bright. Baek San and Sa-Woo are locked up and Hyun-Ju...

Information has leaked out at NSS about the whereabouts of Baek San and Sa-Woo. Yang Mi-Jeong has turned up dead. IRI...

Hyun-Jun has found the IRIS base and arrests Baek San, but Sa-Woo is still missing. The NSS tries to find out where I...

Hyun-Jun and the NSS are able to save the hostages, but with the cost of Sa-Woo's life. But on the night of the summi...