Han'er is God's most beloved daughter, but because of her curiosity about the human world, she secretly took forbidden drugs and was born into an ordinary human family. After the discovery, God sent Han'er's childhood sweetheart down to earth to look for Han'er??? Ye Zi and Xie Miaomiao have been good friends since junior high school. Ye Zi is lively and cheerful, and Miaomiao is gentle and sweet. While reporting, they met the carefree Lin Dujun, and Han, who changed his name to Yu Zheng. The arrival of the mysterious Yu Zheng aroused Ye Zi's curiosity. She knew nothing about him and could not find out anything about him. He is often late for classes but his grades are ridiculously good. He doesn't have any good friends around him but he is actually a gentle and helpful boy. Ye Zi's heart sank in front of his little advantages. And Miaomiao fell in love with Lin Dujun. Not only was his love rival turned out to be his math teacher, but he also encountered the revenge of his former childhood sweetheart. Yu Zheng discovered by chance that Miaomiao was the one he was looking for, but this made both Ye Zi and Miaomiao fall into a dilemma between love and friendship???