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 protects peace on Earth. Perman No. 1 is entrusted with a helmet that increases his power 6600 times and makes his body immune to bullets, a cape that allows him to fly freely, and a badge that can also be used as a communication device and oxygen tank . Together with his partner, the chimpanzee Perman No. 2 , Perman No. 1 must face various villains and accidents. Then, in front of them, Mitsuo's classmate Michiko is kidnapped!