After moving to the country to be near their ailing mother, two young sisters are befriended by a variety of mysterious creatures.

Three sisters, Sachi, Yoshino and Chika, live together in the city of Kamakura, Japan. When their father, absent from the family home for the last fifteen years, dies, they travel to the countryside for his funeral and meet their shy, teenage half sister. Bonding quickly with the orphaned Suzu, they invite her to live with them. Suzu eagerly agrees and a new life of joyful discovery begins for the four siblings.