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.