the first time the july (played by ma sichun) and an sheng (played by zhou dongyu) met at the age of thirteen. one of them is a maverick and domineering "wild child" and the other is a simple, gentle and obedient "good girl". from that year on, july and an sheng were almost inseparable. she was her light and she was her shadow. until one day, a young man named su jiaming (played by li chengbin) appeared beside july and was in love. bbb。 an sheng decided to go to beijing to make a living. before leaving, july unexpectedly discovered that the jade pendant that su jiaming was wearing close to her body actually appeared in an sheng's collar. an sheng left, and the relationship between july and su jiaming continued. they were admitted to the same university and agreed to get married as soon as they graduated. however, things did not develop as july imagined, and the relationship between her and su jiaming also created new variables due to an sheng's return.