Mitsuo Suwa is an elementary school student who is not good at studying or sports. He happens to meet Birdman, a righteous alien who visits Earth, and is appointed as Perman No. 1, a superhero who ...

To do this, he takes an idol singer Sumire Hoshino (aka Perman #3) hostage. Mitsuo Suwa (aka Perman #1) likes the idol dearly (as he doesn't know the real identity of his Perman partner ...