A love story revolving around childhood sweethearts, Ling Chao and Xiao Tu, who journey through youth and share experiences in sadness and joy together. Since he was a child, Ling Chao always knew that his mother preferred daughters. Coincidentally, their neighbor's family has a daughter, Xiao Tu, who is the same age as him. Ling Chao eventually became her god-brother. The both of them have grown up competing with each other, so he demands perfection in everything. He is the smartest child in k...