In this late-season episode, the plot centers on the high-stakes conflict between the National Security Service () and a shadowy terrorist organization known as IRIS .
: The series was one of the most expensive Korean dramas ever produced, featuring a high-budget production across countries like Hungary, Japan, and China. Content of Episode 18 Watch www xrysoi se IRIS E18 091210 HDTV 450p
: Due to the show's massive success, a feature-length edit titled Iris: The Movie was released in November 2010. This film condensed the 20-episode series and added new footage, specifically for international and digital audiences. In this late-season episode, the plot centers on