Uchuu Senkan Yamato: Kanketsu-hen

In 2203, a catastrophic spatial disturbance sends stars and planets into collision and leaves entire civilizations in ruins. During Yamato's investigation, the wandering water planet Aquarius floods Denguil, destroying the world of a militant people who survive only in small numbers.

The Denguil decide to claim Earth as their replacement home and use warp technology to drive Aquarius toward it, intending to drown humanity beneath its oceans. With evacuation fleets under attack and time disappearing, Captain Juuzou Okita returns to command Yamato on a final mission: stop a planet itself before its waters erase Earth.