Tetsuwan Atom: Chikyuu Saigo no Hi

While assisting Professor Ochinomizu with planetary exploration, Astro Boy encounters a floating mass of space debris known as a trash star. There, he finds discarded, non-functioning robots piled on top of each other. Among them is a dying robot soldier named Bemu, whom Astro rescues and brings back to Earth. A bond forms between Astro and Bemu as they share a mutual dislike of conflict. However, the trash star begins moving toward Earth, threatening a catastrophic collision. Panic spreads as the planet faces potential destruction. There is only one possible solution to prevent the impact. Astro must decide how to act in order to save Earth while also preserving his connection with Bemu.