Starring Astro, Japan's first Superhero and a modern folk hero- an anime adaption for the new century based on the seminal manga 'Astro Boy' by the 'God of Manga' Osamu Tezuka.

At the Ministry of Science, fervent Professor Ochanomizu alongside his coworkers strive to reactivate Atom-the first robot with a human heart. Atom is the masterpiece of enigmatic Professor Umatarou Tenma, who built the android to replace his deceased son Tobio. However, while Tenma inexplicably shut down his brainchild and disappeared, Ochanomizu refuses to let such a major breakthrough in science go to waste. Despite having the appearance of a nine-year-old, Atom not only possesses incredible strength and intelligence, but he is also endowed with a remarkable conscience and compassion that rivals humans. Sadly, the mechanical boy soon faces rejection and learns that not everyone is as welcoming as Ochanomizu. Although automatons have integrated into society, they are accepted only as tools and even seen as an upcoming threat to mankind's dominion. Dreaming of a world where people and robots can prosper together, Atom dedicates his existence to protecting the lives of both and inspiring them to form genuine bonds.—MAL Rewrite

It is the year 2003. A variety of robots have been developed and they work at humans' beck and call, but they are just machines that act on humans' orders. Then, the world's first robot with a heart, Astro, is created by Dr. Ochanomizu. The existence of a robot with a heart causes wide repercussions among humans. Some admire, some fear, and some even want to eliminate this robot. Against this background, Astro helps to save people in danger using his remarkable abilities. Just like a human, Astro starts going to school and makes many good friends. It seems Astro is gradually gaining acceptance by humans. Sometimes robots lose credit with humans and are persecuted because of conspiracies framed by anti-robot factions. Meanwhile, a robot who fights against humans and attempts to found a country for mistreated robots appears. Dr. Tenma, the former chief of the Ministry of Science, creates robots that are hostile to humans to challenge Astro. Why does Dr. Tenma relentlessly test Astro? While searching for the reason, Astro discovers a secret about his birth related to Dr. Tenma. In fact, Dr. Ochanomizu is not the one who created Astro.—Osamu Tezuka Official Website

Astro Boy tells the story of a youthful robot boy - Astro - modeled after the deceased son of a research scientist, Dr. Tenma. Originally intended to be kept a secret, the atomic-powered robot becomes a reluctant superhero who fights for justice and peace for humans and robots alike. Created in Metro City, he lives among a 'retro-futuristic' society populated by humans and robots. His creator Dr. Tenma, head of the Ministry of Science, builds Astro in his son's image. Astro never can fill the void that Dr. Tenma feels over the loss of his son. Tenma shuts down Astro, burns down the Ministry of Science and flees. Some time later, Astro is discovered by Dr. O'Shay, the new head of the Ministry. Dr. O'Shay takes in Astro and serves as his mentor. Driven by the belief that robots and humans should be friends, Dr. O'Shay is Astro's greatest ally. He provides Astro with a home, enrolls him in school and creates a robot family for him. Astro possesses superb strength, including jet-rocket feet and arms that allow him to fly at extreme speeds. However, the secret to his victories is not his super-powers; the quality that makes him superior to other robots is his artificial brain, the most advanced in the world. This unique quality, termed kokoro in Japanese, allows Astro to experience all of the same emotions as humans. He's clever, resourceful and has a strong sense of justice, always attempting to reason with his adversaries. Mankind's only hope of surviving the onslaught of rebellious robots is a robot himself...the fearless, selfless, incorruptible champion known as Astro. In his quest for peace and justice, Astro often goes it alone, but he is occasionally aided by his robot sister or even rebel robots that he is able to enlist. Astro also has human friends from school who often become entangled in his conflicts.—Anonymous