Pyo Young-ho

On the day of the hundreds billion dollar contract deal just ahead, Jung suddenly disappears after he leaves for a convenient store. Inspector Kim who is desperate to get an exclusive crime case in the hope of drawing media attention finds out that Jung had many jealous colleagues and starts to investigate the case focusing on embezzlement and kidnapping. On the other hand, inspector Park finds out that Jung’s fiancee Mi-sun, a sales manager at the insurance company, has recently took out a life insurance policy on Jung’s life and points her as a suspect. The more investigation goes further the more case gets mysterious and things start to get out of control as a missing case develops to an assault, a kidnapping and finally to a murder.

Jiwhaza, also known as Burst! Mental concentration, is South Korean game show known mainly for its oddball humor. It was broadcast in 90-minute episodes on Seoul Broadcasting System every Saturday from April 14, 2007, to September 15, 2007. The show was hosted by the SBS announcer Choi Gwi-hwan and had two teams of celebrity contestants, each captained by regulars Yoo Hyun Young and Kim Yong Man. It was divided into a series of loosely-scripted challenges; the team with the winning final score would take "Jeongshin Tongil gwan" for that episode. A regular segment on the show was "the wall", an adaptation of the Brain Wall from the Japanese Tunnels game show. The segment had a moving wall advancing on a contestant standing at the edge of a pool of water. To avoid being knocked into the pool, he or she was to jump, dodge or otherwise pass through a hole in the wall. Some of the more difficult walls required acrobatic skill to pass and used humorous cutouts of ballet poses, flying kicks and handstands. Another regular segment was the "earthquake room", in which contestants on a padded platform were each given a pile of cushions. They were then asked to solve a series of visual puzzles, but could only give their answer while kneeling on a complete pile of cushions. This often resulted in tumblehouse slapstick because of the rocking motion of the platform and constant fighting over cushions; foam rocks were also thrown at the contestants and the platform tilted violently whenever a wrong answer was given.

Infinite Challenge has been reported as the first "Real-Variety" show in Korean television history. The program is largely unscripted, and follows a similar format of challenge-based Reality Television programs, familiar to the audiences in the West, but the challenges are often silly, absurd, or impossible to achieve, so the program takes on the aspect of a satirical comedy variety show, rather than a more standard reality or contest program. In order to achieve its comedic purposes its 6 hosts and staff continuously proclaim, the elements of this show are the 3-Ds, Dirty, Dangerous, and Difficult.