One Punch Man Season 3 Plot: What Season 2’s Ending Really Set in Motion

Clear your schedule—One Punch Man season 3 lands October 5, 2025, as Saitama finally punches back onto screens after a long wait, promising bigger stakes and brutal new battles.
One Punch Man is finally charging back in. Season 3 kicks off soon, and yes, it picks up right where we left things bruised and smoking. If you like your anime with ridiculous power scaling, monster politics, and a healthy dose of chaos, this is the stretch fans have been waiting on for years.
Release plan (and the small but useful heads-up)
- Season 3 premiere: Sunday, October 5, 2025
- New episodes: Every Sunday
- Expect the opener to be a recap episode, per the official site
Where we jump back in
Season 2 closed with two big beats: Saitama vaporized Elder Centipede, and Phoenix Man hauled a battered Garou off to the Monster Association HQ. Season 3 starts exactly at that junction and keeps digging into the Monster Association arc.
If you track the manga: Season 2 wrapped around chapter 85. Season 3 begins at chapter 86. That little chapter math note is for the inside-baseball crowd who wants to know precisely how far we are in the adaptation.
What Season 3 is actually doing
This run pushes deeper into the Hero Association vs. Monster Association conflict, which means nastier monsters, higher stakes, and more of the S-Class heroes who barely had time to breathe last season. The spotlight is very much on Garou again. His whole evolution from 'problem' to 'problem the entire system has to answer for' drives a lot of the momentum here, and it gives the season its backbone beyond the punchlines.
The arc is huge. Like, really huge.
The Monster Association arc is the sixth arc in the Human Monster Saga, and it is the biggest, longest chunk of One Punch Man. Season 2 covered roughly 48 manga chapters. There are still about 90 chapters left in this arc. Translation: Season 3 will cover a solid slice, but do not expect the entire arc to be wrapped up in one cour. The exact episode count is still under wraps, and how fast the show moves will decide how far into the arc we get this time.
So, should you be excited?
If you want bigger fights, more S-Class face time, Garou getting even messier, and the hero-vs-monster war hitting full speed, yes. This is the part of One Punch Man that cranks the scope while still making room for character beats. It also looks set to be one of the year’s splashier anime returns.
Where to watch
One Punch Man is currently streaming on Crunchyroll.