From time to time, the civilized world is shocked to hear of the sightings of various and assorted monsters: the Loch Ness Monster of Scotland, the Mediterranean colocynth - a prehistoric fish actually caught in the late 1950s, etc.
Robots are now mass produced, so when Astro Boy wants a mom, Elefun has a mom and dad made for him. A colossal robot short-circuits and helps bank robbers. Only Astro Boy can stop it.
Cross Island is a mysterious uncharted island in a little-known sea. Here, a task force of robots work in great secrecy, extracting valuable stores of uranium.
One night, during a storm, Astro Boy meets Lodar, a boy from another planet. Lodar has come to warn us of an invasion of flying saucers from his world.
A robot named Astro Boy is built. He replaces Dr. Boynton's dead son. Realizing he's not a real boy, Dr. Boynton sells him to the circus. After saving the circus owner's life, Astro Boy gets his freedom and Elefun as mentor.
Once a year in the 21st century, the citizens of earth celebrate Memory Day. On that day, they honor the memories of family members who have traveled so far into the universe that they are gone for years at a time!