It tells the story of Shu Qingzhi, a 28-year-old university teacher, and Jiang Chen, a 17-year-old boy, who met in midsummer in Qingxi Town. He made a promise to "wait for me for two years" and worked hard to get into her university. He used seven years to overcome the eight-year age gap and numerous practical obstacles - from the strong opposition of his parents, the ambiguous crisis of trust in the workplace, to the collision of each other's growth rhythms. In the end, the lakeside art museum he designed became a wedding hall. Five years later, he and his daughter returned to the Firefly Creek. At that heart-warming place in summer, time has turned the forbearing waiting into a lifelong love.
