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.
Everything she says and does is 
just what she's programmed to do.
كلّ ما تقوله وتفعله هو
ما بُرمِجَتْ على فعله
Als Humanoid kann sie nur sagen und tun,
was ihr einprogrammiert wurde.
Sus acciones y palabras
solo siguen su programación.
Sus acciones y palabras
solo siguen su programación.
Ses paroles et son attitude
sont dictées par un programme.
Le sue parole e i suoi comportamenti
Ela só fala e faz o que
está programado nela.
Все её слова и действия
просто запрограммированы.