At nights, prisoners leave the prison to commit perfect crimes. Ik-Ho (Han Suk-Kyu) is an inmate who wields king like power in the prison. Yoo-Gun (Kim Rae-Won) is a new inmate charged with hit-and-run, destruction of evidence and bribery. He is an ex-detective with a 100% arrest record. Ik-Ho pays attention to Yoo-Gun who has a strong will and hot temper.