As a colossal spaceship floats in the skies above City A, a member of its monstrous crew battles on the ground against a group of S Class heroes. Despite their powers, they can't seem to finish it off. Meanwhile, Saitama has boarded the enemy ship on his own.

One-Punch Man Season 1 Episodes...

• s01e01 - The Strongest Man
• s01e02 - The Lone Cyborg
• s01e03 - The Obsessive Scientist
• s01e04 - The Modern Ninja
• s01e05 - The Ultimate Master
• s01e06 - The Terrifying City
• s01e07 - The Ultimate Disciple
• s01e08 - The Deep Sea King
• s01e09 - Unyielding Justice
• s01e10 - Unparalleled Peril
• s01e11 - The Dominator of the Universe
• s01e12 - The Strongest Hero

One-Punch Man Show Summary

Saitama is a superhero who has trained so hard that his hair has fallen out, and who can overcome any enemy with one punch. However, because he is so strong, he has become bored and frustrated that he wins all of his battles too easily.