GrE writes, "Astro Boy (the movie) is a delightful reboot of the 1960's cartoon of the same name. Dr Tenma loses his son in a tragic accident while testing a giant robot powered by the red core – a power source made of negative energy. Grief stricken, he recreates his son in robot form, and powers that new robot with the far more stable blue core, which is made of positive energy. Astro spends the rest of the movie searching for his place in the world. Some stuff happens, some lessons are learned, and there's a giant alien monster at the end that doesn't have anything to do with the rest of the movie – what more could you ask for? "