One Bon Lan Festival night, Detective Ma Rufei (played by Fang Zhongxin) accidentally looked through the files of a theater fire that happened more than 20 years ago and decided to find out the truth. In the process, he meets the beautiful Qin Xiaohong (played by Guo Aiming), whose cold and arrogant character makes Fei determined to pursue her. Hong's adoptive father, Qin Baojian (played by Liu Jiang), is a master of numerology. He told Hong not to get married before he was thirty years old, otherwise his life would be in danger.