The story of four fixed persons - Yuan Mo, Ek Shu, Wang Kun Wu, and U Chi Hua -, who are inspired by ideals, bravely begin a journey for their nation and justice. During the peaceful years of the Deming dynasty, Yuan Mo, a commoner in Changle City, is located at the city gate, which issues permits to foreign visitors using the four -class pavilion seal. Unexpected, he faces a shoe, trying to enter a refugee city from the Yanley Kingdom, leading to a change. As a result, the new upcoming border general Wang Kun Wu was punished by supervising duties in the four class pavilion.