This is a pure love story of childhood sweethearts spanning 19 years.Chen Xiaoxi is a petite, cute, sunny and positive girl. She met Jiang Chen, whom she met at school, a proud and talented genius boy, and she went to meet him in various ways and moved him.This drama not only depicts the beautiful and pure heart-warming moments of a seventeen-year-old girl, but also affectionately explores the regrets and misses in growth, and how the two souls finally find each other and regain their original aspirations as the years pass through confusion and mistakes.