After moving from Tokyo to a small seaside town, 15-year-old Futaba is captivated by the ocean views and the vast expanse of water which she finds laid out before her. Unbeknownst to her, Futaba's fascination is shared by Hikari, who has lived in the town her entire life, and the two girl's lives intermingle unexpectedly when the introverted Futaba meets the outgoing and exuberant Hikari as one of her new classmates.
Before she knows it, a whole new world is opened up to … mehrFutaba - a sparkling, shimmering world that exists under the sea, as her new-found friend helps her confront her fears and anxieties through the form of scuba diving.
As her circle of friends grows, and with her confidence burgeoning, so Futaba finds the strength and self-assuredness to grow and develop with the support of those around her in this quietly touching and charming tale of friendship and finding yourself, lovingly animated by Production I.G. weniger