When the world is threatened by alien invaders and giant prehistoric monsters, there is only one agency equipped to handle the situation: The Science Patrol, an ultra-sophisticated police force equipped with high-tech weaponry and spacecrafts. Led by Captain Muramatsu, the team defends the planet from the unknown. However, unbeknownst to the team, one of their members, Hayata, has the ability to transform into the giant superhero from Nebula M7B, Ultraman, when all their weaponry can't stop their foes.