The three-generation only son of the Fengshi family in Heyin, Fengbi (played by Kim Jae-jung), is a well-known unemployed vagrant in the community. After hearing that his female friend Jiang Xiuzhen (played by Kim Yoo Jin), who had been in unrequited love for 28 years, was about to get married, he fell into a strange manhole and embarked on a ridiculous time journey. If he can\’t stop her beloved wedding in a week, he will attend the wedding as a guest rather than as a groom. Faced with such a situation, can he successfully prevent this wedding and get her heart?