For Xun (Cha Tae-hyun), the most fun thing in life is undoubtedly gambling. Although he owes a large debt due to his poor gambling skills, and he is unable to repay it as a parking boy at a happy place, he still enjoys it. One day, a man named Zhongtai (Park Joong-hoon) appeared in front of Xun. Zhongtai is a debt collector with a legendary history. He threatened Xun that if he did not pay off the debt within 14 hours, he would lose one of his kidneys as a replacement. Only then did Xun realize the seriousness of the matter. An accident caused a mysterious suitcase to fall into the hands of Zhongtai and Xun, and the box contained the latest scientific and technological research and development results of South Korea. With this priceless treasure, Xun and Zhongtai soon became the targets of commercial spies, and the two who were once in a stalemate understood that only by choosing to work together can they escape.