"Sea Street Diary" Kamakura, the ancient capital by the sea, is a small town along the mountains. In an inconspicuous corner, there live the four sisters of the Xiangtian family.

Their father ran away from home with his lover in his early years, and their mother left the girls in the care of their grandmother.

After their grandmother passed away, the granddaughters inherited this large house with a long history.

News of their father's death reaches the sisters.

They attended their father's funeral together and got acquainted with their half-sister Qian YeLing, whom they had never met.

Fortunately, before leaving, Ling invited Ling to move to Kamakura, and Ling moved into the house where her father once lived.

As the seasons pass, the stories of the sisters quietly unfold.