AN EX-COP CONVICT JOINS A SECRET CRIME SYNDICATE WITHIN THE PRISON At nights, prisoners leave the prison to commit perfect crimes. Ik-ho is an inmate who wields king like absolute power in the prison. Yoo-gun is a new inmate charged with a hit-and-run accident, destruction of evidence and bribery. He is a famous ex-detective with a 100% arrest record. Ik-ho pays attention to Yoo-gun who has a strong will and hot temper. Soon enough, Yoo-gun joined the Ik-ho's crime empire as a major part to control the world from the within.

Amid national chaos and fear for his life, tyrannical King Gwanghae orders his trusted councilor Heo Kyun to find a royal body double. He hires Ha-seon, a peasant mimic who bears a perfect resemblance to the King. When King Gwanghae collapses from a mysterious poison, Ha-seon reluctantly becomes a King. He must follow his conscience to save his country from collapse, avoid assassination, and pull off the biggest masquerade in history. K Written by CJ Entertainment