A micro-robot attacks Zoran's operating system from the inside. Astro must shrink down to microscopic size and go inside of Zoran's system to fight the micro-robot and save his sister.
Dr. Tenma gains control of robots with special freezing powers that he plans to use for his own destructive plans. Astro must convince the Robots that Dr. Tenma is an evil leader.
A weather experiment turns a desert into fertile farmland, and proves that humans and robots can work well together. But a rash of earthquakes and storms will ruin the project unless Astro can help.
On the moon of Deimos, robot miners ignore orders from a human foreman and begin digging on their own. Astro must step in before Intergalactic Security exterminates the disobedient robots.
Astro joins a robot-dog to watch a leisurely game of Rocket Ball. When the robot players become destructive, Astro must save the human spectators and control the dangerous robot athletes.
Doctor O'Shay creates a robot-sister, Zoran, for Astro. While Zoran is off exploring she is captured by the giant robot bird Katari, and only her powerful big brother can save her!
Skunk reactivates Jumbo, a giant robot and uses him to stage a daring prison break. Astro must stop Jumbo and turn him back into the gentle giant that he really is.
When air-blimp is threatened with a wormhole device, Astro is blamed and arrested. The Blue Knight helps him escape from jail, and together they must save the blimp and prove Astro's innocence.
When Shadow unleashes an army of mind-controlling teddy bears on Metro City, it's up to Astro to stop them before they take over the entire population.
While saving the planet from a falling satellite, Astro is damaged and loses his memory. Boon, a scientist with a mysterious past, tries to help Astro recover before another satellite hits Earth.