Eren (Haruma Miura) leaves to restore a break in the wall destroyed by a Titan. He comes under attack by the Titans and is cornered. Shikishima (Hiroki Hasegawa) comes to his aid. The titans never stops attacking. Eren is now injured and tries to protect Armin (Kanata Hongo), but is swallowed by a titan. A Titan with black hair appears and begins to expel the other titans.

100 years ago, titans suddenly appeared on Earth. Soon, human civilization veered on collapse due to the titans. Humans then built a giant wall to defend themselves. Within the giant walls, humans lived in peace, but, 100 years later, the giant wall is broken.

24 people play a fierce survival game for their own purposes.

After trying to rescue a man on the subway tracks, two teens wake up in a room dominated by a mysterious black sphere that sends them to hunt down and kill aliens hiding on Earth.