Toby Tenma was about to receive his high school diploma when a meteorite hit him, turning him into a robot boy.

Confused and frightened, Toby was whisked away by mysterious men in black suits before he could comprehend what had happened.

In this secret high school, Toby met other robots - Zoran, Pluto, Atlas, and Jetter. He was no longer alone.

Under the guidance of his father, Dr Tenma, and Dr Elefun, Toby started his new journey as a robot, now known as Astro Boy.

Meanwhile, in an underground lair, evil villains plotted to gain the powerful Quantonium that had transformed Toby.

Learning about the villain's plan, Dr Tenma and Dr Elefun tasked Astro Boy with the mission to stop them.

Astro Boy, with his new friends, battled the villains. Each fight was tougher than the last, but they never gave up.

In the final showdown, Atlas was critically damaged. Astro Boy, filled with determination, fought harder than ever.

In a fierce battle, Astro Boy confronted the main villain, risking everything to protect the world from imminent destruction.

With a powerful blast, Astro Boy defeated the villain, preventing him from obtaining the Quantonium.

Astro Boy returned to the school as a hero. His friends, Zoran, Pluto, Atlas, and Jetter, greeted him with joy and relief.

Under the proud gaze of his father and Dr Elefun, Astro Boy stood tall. He was no longer just Toby Tenma, he was a hero.