After years of hard work, Xin Weilai (Kim Sun-a) finally passed the exam for a 10th-level civil servant and started working as a tea-serving worker in a remote place. Although there is still a certain gap from her dream of passing the 9th-level civil servant exam, Weilai still lives happily every day. Because of a beauty pageant, Weilai met Zhuguo (Cha Seung-won). Zhuguo is a genius in administrative examinations, and his ambition is even greater, his goal is to become president. The first encounter with Weilai made him very uncomfortable with this sloppy little civil servant. But after all kinds of mistakes and self-defeating, Weilai actually became the mayor. Weilai, who had to bite the bullet and work hard, received the help of Zhuguo. With the help of this professional knowledge reserve, Weilai, who was at a loss at first, began to slowly get on the right track and work well. And the two gradually developed feelings for each other during their interactions. The love story of the city hall began.