Just as Segami is in danger, Small 3 arrives at the last possible moment and confronts the three gigantic aliens. Unfazed even when shot with ray guns, the three, like superheroes, overwhelm their opponents with their immense power.

As the Small 3 soar toward Shibuya, Genius runs out of options against a relentless alien warrior. Reinforcements arrive — but will it be enough?

Genius commandeers an alien walker and leads a counterattack. But two fearsome alien soldiers are en route. Meanwhile, Doc and the others seek answers.

Futaba faces off against a squad of alien soldiers to protect her new friend. Facing heavy losses, Segami and the Rebellion turn to their secret weapon.

Aliens surround a sleeping Futaba! In Shibuya, Segami and his comrades fight fiercely but lose ground. As he retreats, he spots Tashiro under attack.

While imprisoned in a spaceship, Futaba encounters a mysterious life form named Kyu-chan and they begin to act together. Meanwhile, on Earth, the "Rebellion" begins its guerrilla warfare against aliens in the Shibuya Mission. Segami, nervous about using unfamiliar equipment and firearms, receives the secret weapon "Tsuyokunaru" from former SAT member Sumeragi and heads to the battlefield.

With his mind in a whirl, Segami runs into the Small 3. They witness a bold fighter pilot pit his life against an alien ship. Will it light a fire?

As college student Segami struggles with his dystopian world, a hot schoolmate hands him an enticing flyer. Hoping to meet girls, he finds something else.

Futaba, held captive by aliens, is attacked with a heat ray gun inside the spaceship. However, she remains unharmed and wanders around the spaceship. Meanwhile, Small 3 goes to Doc in the "Multiverse" to get clues about Futaba's whereabouts. Just then, he spots a parent and child in the city being held at gunpoint by aliens.

Stranded in a new world, the Small 3 realize they have incredible powers. They meet other versions of themselves and learn how this reality differs.

Pyontaro, Hiroshi and Tsubame — the Small 3 — load up an odd disc from their teacher. When they're not looking, Pyontaro's little sister Futaba vanishes.