In the ordinary world, people are unaware that somewhere very close by a battle for their lives is taking place, fought by Gatchemans from the Galaxy Squad against aliens from other worlds. Hajime—a self‑aware girl—just becomes a new recruit of this squad, and in the team with Sugane—a very proper guy (girls keep such guys in the friend zone), Oudy—an eccentric young man, Utsutsu—a cat‑like lolita‑sexy bar girl, Joe—a macho indifferent guy, and Piymon—a Pokémon‑like know‑it‑all—she will have to save the world.
