Meng Xiao is a fledgling architectural designer. She has a crush on her fellow senior Ling Shaohua, who works in the same unit. Ling Shaohua is a promising up-and-coming designer who is young and prosperous, but he has never been able to abandon his first girlfriend. He works hard and strives to make progress, hoping that one day he will become famous and be recognized by his wealthy ex-girlfriend's parents and renew his relationship with his ex-girlfriend. It's a pity that if life is just like the first time we met, why is the autumn wind sad? Things are unpredictable, people's hearts are changeable, and no one can ever return to the starting point.