The oldest leftover girl Ye Mengmeng is single because of the emotional entanglement between her past life and her lover, which made her vow to never fall in love with anyone again. After a car accident, Yue Lao showed up and gave her guidance, allowing her to go back five hundred years ago to find the man with a crescent mark on his butt, and do it again to change her fate of becoming a leftover woman five hundred years later. She was worried about how to find that man in the huge crowd. Should she ask them to take off their pants to show her. The old god gave her a jade bracelet and said that with this jade bracelet, people would tell the truth. Then her soul drifted to that life, only to find that this jade bracelet can only make women tell the truth. The old god apologized and said that he gave it to the wrong one. She had no choice but to find the man she was destined to be with in order to end her life as a leftover woman in that life.