In the far reaches of space, there is a planet that is being invaded by an outside force and is on the brink of destruction. Most of the people on the planet have given up fighting, but there are two people who are still trying to save the planet. The two of them seek help from Umibozu, who is called “Space's Savior,” “The Sweeper,” and “The Strongest Alien Buster.” The man is the strongest is space, but he wears a toupee. He is also incredibly sensitive about toupee-related words. People are hopeful and distrustful of Umibozu. As that goes on, the truth behind the history of the planet comes to light…