Yukio was destroyed in battle and Tetsuo survived in an escape pod. After eight years in cold sleep, the escape pod finally lands back on Earth. But when Tetsuo emerges he finds a world in ruins, entirely frozen beneath a blanket of ice and snow—snowball Earth! What happened to humanity, how did the planet freeze over, and will Tetsuo be able to keep his last promise to Yukio?
E1
In 2025 AD, after a sudden invasion of intergalactic kaiju, a painfully shy boy, Tetsuo Yabusame, saves the autonomous bomb Yukio and becomes an unlikely defender of Earth. Ten years later, now hailed as a "savior", Tetsuo heads into space with Yukio for the Final Battle. With 20,000 kaiju closing in, humanity's fate is on the line to bring an end to this relentless conflict!
E2
The world outside the escape pod is covered in snow and ice, and devoid of life. Tetsuo sets off to find human survivors, his promise to Yukio on his mind. Riding an excavator that he finds in the ruins, he battles an intergalactic kaiju that attacks him, and it is then that he encounters the members of humankind who've survived! Can Tetsuo finally make the "friends" that he's always longed for?
E3
After meeting Ao and the others on the frozen Earth, Tetsuo is gradually accepted into the fold.
E4
Tetsuo and Yukio are crossing the snowy plains to reach the Mishima Mall, where Ao and the others live.
E8