In a quiet village in the north, the life trajectories of Chen Mo, a top student in Capricorn, and Lin Xiaoman, a low-level student in Taurus, from being closely intertwined in childhood to looking at each other in parallel as adults, hide a two-way secret love that spans more than ten years. Chen Mo, who was born on Christmas Day in 2000, has been "someone else's child" since he was a child. He is cold and reserved, and his thoughts are hidden in the guardianship of silence. When playing hide and seek in elementary school, he always kept Lin Xiaoman in his arms, and accompanied him silently at a slow pace on the way to school. Lin Xiaoman, who was born in the beginning of summer in 1999, is like a tough weed, with mediocre grades but warmth and liveliness, and quietly hides Chen Mo's tenderness in his heart.
In the sixth grade, the village primary school was disbanded, and Chen Mo was promoted to the county middle school, where he became an alumnus of Lin Xiaoman's younger brother Lin Rui, while Lin Xiaoman stayed in the township middle school, and their worlds were separated by thirty miles. As an adult, Chen Mo studied all the way to graduate school in Beijing, but was emotionally blank. He returned to the village every Spring Festival, and could only stare silently at Lin Xiaoman in front of her house. Lin Xiaoman stumbled around in the city and experienced three completely different relationships: he was cheated on by a Leo family man who was 14 years older, he missed out on a gentle and considerate Virgo boy because of a long distance, and he was coerced by a Leo boy he met online. When the windmill of childhood reappears unexpectedly, those unspoken thoughts hidden in time finally have the opportunity to be blown away by the wind when they meet again as adults.
