A disturbance from outer space, the Science Patrol investigated the matter to find themselves in the Monster Graveyard, where all aliens and monsters go when they are destroyed by the Ultra Warriors. Nearly all of them except a skeleton-like monster could be identified.

As they returned to Earth, the skeleton monster dubbed "Seabozu," fell from the sky and landed in a nearby city. As The Science Patrol was about to fire, they noticed that the monster wasn't intentionally attacking the city nor trying to harm anyone, but instead it climbed the tallest building in the city as if it were trying to get back into the sky, however after jumping off the building trying to jump into the sky, it fell to the ground below and wandered away whimpering. Finally, the Science Patrol cornered Seabozu in the middle of an open field away from society and opened fire upon the monster. After minutes of senseless violence and Seabozu being unruly attacked, it became obvious to the Science Patrol that Seabozu just wanted to go home to the Monster Graveyard.