Total Episodes: 20eps
Release Date: 2009
Copyright: All Rights Available
Top 707 agents KimM Hyun-jun (Lee Byung-heon) and Jin Sa-woo (Jeong Jun-ho) are blood brothers who swore to trust each other and have an unchanging friendship for life. They stand out and get noticed by the National Security System (NSS) and end up becoming top agents. They meet agent Choi Seung-hee(Kim Tae-hee) there and both fall in love with her. But Hyun-jun and Seung-hee become close and Sa-woo fights to hide his feelings for Seung-hee. One day, Hyun-jun and Seung-hee are sent on a mission to Hungary with Sa-woo. When they successfully finish off their job with immaculate teamwork and are celebrating, a message arrives to Hyun-jun asking him to meet in secret.
Baek-san (Kim Young-cheol), an executive of NSS who had been waiting for Hyun-jun orders a solo mission. Despite the tight protection of bodyguards, Hyun-jun succeeds in his mission. But before escaping, Hyun-jun gets wounded by Chul-young (Kim Seung-woo) and Sun-hwa (Kim So-yeon), his targets’ head security bodyguards. After an intense, suffocating chase, Hyun-jun succeeds in escaping and hides out in a house. But later he is shockingly betrayed by his most trusted friend, Sa-woo. After getting a bullet wound from Sa-woo’s Hyun-jun tries to escape with Seung-hee’s help. However, Hyun-jun ends up losing Seung-hee. His car, while being chased by the agents, also explodes. They are both misled into thinking that the other had died. Hyun-jun gets saved by an unidentifiable ‘Voice’ and learns the secret identity of a group called, ‘Iris’.
1 year later, with the two Koreas about to be reunified, Hyun-jun makes his return. After spending a nightmarish life of betrayal and loss, Hyun-jun returns to get revenge on those who threw him into the living hell. With the help of the President, Hyun-jun returns to his post in the NSS. Starting a fight against the secret society called, ‘Iris’ that tries to interfere with the reunification, Hyun-jun now puts everything on the line for the battle of his life.