Title : Secretly, Greatly
Genre : Action, Drama, Comedy
Cast : Kim Soo-hyun (Won Ryu-hwan), Park Ki-woong (Lee Hae-rang), Lee Hyun-woo (Lee Hae-jin), Son Hyun-joo (Kim Tae-won), Ko Chang-seok (Seo Sang-gu), Kim Sung-kyun (Seo Soo-hyuk), Jang Gwang (Go Hwi-sun), Shin Jung-geun (Mr. Park), Hong Kyung-in (Jo Doo-seok), Lee Chae-young (Ran), Park Eun-bin (Yoon Yoo-ran), Choi Woo-shik (Yoon Yoo-joon), Goo Seung-hyun (Hwang Chi-woong), Um Tae-goo (Hwang Jae-oh), Kim Pub-lae (NIS General Manager)
Movie Plot : As a North Korean sleeper cell agent, Ryu-han infiltrates the South and assumes the role of a village idiot in a rural town. He observes the townsfolk and waits patiently for his mission. One day, after 2 years of playing the role of the village idiot, fellow elite spies Hae-rang, posed as a rock star and Hae-jin, posed as an ordinary student, are dispatched to the same town as Ryu-han. He helps the other two spies settle in and teach them how to adjust in the South. There is a sudden drastic political power shift in the North and all three spies receive an urgent and ultimate mission.