Wideo : Snowball Earth

Tetsuo is a shy boy whose only companion is Yukio, a giant robot who once fought beside him to save Earth from invading monsters. Ten years after the final battle, Tetsuo returns home to a planet transformed—buried beneath endless snow and ice. In this frozen world, he sets out alone, holding tight to the promise he made to Yukio and searching for what remains of the world they once protected.