Kamakura, the ancient capital near the sea, is a small town built on the mountain. The four sisters of Tian Xiang's family live in an inconspicuous corner. Their father ran away from home with his lover in his early years, while his mother simply left her daughters to her grandmother to take care of. After grandma died, the granddaughters inherited this big house with a long history. Yuji Yoshida (Ayase Haruka), the eldest sister, takes on the heavy responsibility of the family prematurely, taking care of the healthy growth of her two sisters, Jianai (Masami Nagasawa) and Qianjia (Kaho). On this day, the news of my father's death reached my sisters. They go to their father's funeral together and meet their half-sister Asano Nagaakira Bell (played by Guang Lai). Maybe it's blood affinity. Fortunately, before I left, I invited Ling to move to Kamakura to live with me. Soon, with thoughts of her sisters, Ling walked into the house where her father once lived. The four seasons flow, and the stories of sisters are quietly staged.