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.
Well, this place changed quite 
a bit in the past few years.
تغيّر هذا المكان كثيراً في السّنوات
القليلة الماضية
Hm. Hier hat es sich in den
letzten Jahren ziemlich verändert.
La zona ha cambiado bastante
en unos años.
La zona ha cambiado bastante
en unos años.
Beaucoup de choses ont changé,
ces dernières années.
Negli ultimi anni questo posto
è molto cambiato.
Bom, o lugar mudou
bastante nos últimos anos.
Да, за последние годы
тут многое изменилось.
หลายปีมานี้แถวนี้ก็เปลี่ยนไปมากเลยนี่นะ