Yeo Jang-Boo (Cha Tae-Hyun) possesses extraordinary visual acuity. He sees everything in slow motion. He is able to see things that ordinary people cannot. When he was little, people laughed at him. He spent the next 20 years at home watching TV dramas. Finally, Yeo Jang-Boo goes out into the world and becomes an ace at a South Korean CCTV control center. While doing his job, he sees his long crush childhood friend, Bong Soo-Mi (Nam Sang-Mi) and decides to stalk her using his expertise on CCTV.—anonymous