IRlS is a secret organization that incites and controls&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;assassination, coup d'etat, terrorism and the destruction of social orders hiding in the shadows.&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;Korea, the last and only divided country.&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;IRlS moved North Korean hard-liners to plan nuclear terrorism in Seoul, South Korea.&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;The nuclear terrorism in Seoul would lead to a full-scale war between North and South Korea.&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;Using the war as an opportunity&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;IRlS plotted to establish a new pro-IRlS government in North Korea.&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;This is how the conflict between IRlS and the NSS began in the shadows.&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;Many nameless NSS agents were sacrificed during this process.&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;Baek San had been working for IRlS long before he became the Director of NSS.&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;However he believed he'd made the best choice for the protection of his country.&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;The nuclear terrorism attempt failed and Baek San was arrested for being a spy for IRlS.&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;North Korean moderates, Park Chul Young and Kim Sun Hwa&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;helped to stop the nuclear war and returned to North Korea. &amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;And the man, who saved his country on the verge of nuclear crisis&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;decided to live a normal life with the woman he loves.&amp;lt;/i&amp;gt; &amp;lt;i&amp;gt;He resigned from the NSS. 