Ten years ago, Wen Heng, who was fostered in a water town in the south of the Yangtze River, was taken back to Wen's northern house for the first time. There she met Yanxi. Their life is entangled together, life path taking them separate ways and together again.

Xu Yi and Gao Xiaonan unexpectedly reunite during their college years, resulting in a bond that spans multiple years as they accompany each other and grow together. Will the friendship between Xu Yi and Gao Xiaonan change? Will they part away or stay together?

At the end of an alley, a “lighting shop” is always lit up, and the mysterious boss carefully wipes every light bulb, while customers of all kinds come and go. A nurse and her boyfriend move into a new apartment near the shop. She gradually discovers that everyone here has a secret that they can’t tell. On a stormy night, she walks into the lighting shop at the end of the alley, and the answers are slowly revealed…