An Shaomin and Liu Xiuying used to be close playmates in the same residential area when they were children. They called each other "husband" and "wife" every day, but their young love faced a catastrophe when Xiuying moved. All that remained of their childhood love was a "declaration of love" crookedly written on exercise paper and their small palm prints. One day ten years later, An Shaomin traveled thousands of miles to find Xiuying's home. It was a beautiful scene like a fairy tale, but what should we do... Because she was too young at the time, Liu Xiuying had already completely forgotten the childhood vows of each other, and was falling in love with Xuanyu, a handsome boy from Zhaoxi High School...