Xia Tian (played by Jiang Xin) is an editor of a radio station. She is a somewhat plump optimist who is always happy and cheerful. She has never seriously considered her lifelong event. One day, Xia Tian accidentally heard her mother scolding her. In anger, Xia Tian made a bet with her mother that she would bring her boyfriend to her sister's wedding. At this time, there were only 278 days left before her sister's wedding. If Xia Tian wins, she can keep the house left by her grandmother, where Xia Tian's beautiful childhood memories are preserved. Xia Tian broadcasted her experience through the radio and won the support of many listeners. For a while, the radio station's phone was about to explode, and the callers were all recommending themselves to date Xia Tian. In this way, Xia Tian started one blind date after another and met one wonderful person after another.