In the near future, much of the world has been forgotten at the bottom of the ocean due to rising sea levels. Natsuki Ikaruga, who lives in a small town surrounded and stranded by the sea, is invited by a mysterious woman, Catherine, to search for a treasure in his grandmother's house who was a marine geologist. One day, he dives to the bottom of the ocean in a submarine and encounters a mysterious capsule with a girl sleeping inside. The girl was a humanoid so sophisticated that she could be mistaken for a human.
Then will you come with me, Minamo?
إذاً هل ستأتين معي يا مينامو؟
Willst du dann
mit dabei sein, Minamo?
¿Quieres venir tú también, Minamo?
¿Quieres venir tú también, Minamo?
Tu voudrais nous accompagner,
Minamo ?
Allora vuoi venire anche tu con me?
O que você acha de vir
junto então, Minamo?
Ну тогда оставайся
проследить, Минамо.