When messenger Li Haolin returned to his hometown to visit relatives, in order to save his ten-year relationship, he decided to confess his love to his ex-girlfriend again before she completely became someone else's wife. However, he went to the wrong wedding venue and bumped into the bride Lu Shiyi who was exposing the groom Song Xiaotian's cheating at the wedding venue. However Lu Shiyi didn't know that the USB flash drive evidence in her hand had been exchanged with Wang Mazi, who was about to use it to sell trade secrets more than ten minutes ago. After a series of misunderstandings, the three of them embarked on a journey that made people laugh.
