A letter to Momo

Eleven-year-old Momo reluctantly moves with her mother from the bustling city of Tokyo to the family estate on Shio Island in the Seto Inland Sea of Japan. Despite initial difficulties, she begins to adjust to her new home, but the thoughts of her father's last letter continue to haunt her.

One day, when Momo discovers an old book in the attic, strange and supernatural events begin to unfold: she encounters three mischievous goblins that only she can see, who have been tasked with protecting her. Soon, the insatiable goblins turn the otherwise peaceful island upside down, raiding pantries and orchards. However, these quirky companions also have a serious side, and it seems they hold the key to the mystery surrounding her late father's unfinished letter.