Doctor Doomhas finally won, with Marvel promising that he’s beaten every superhero, but that doesn’t mean that Doom’s problems are over. In the Marvel Universe, there are usually good reasons for superheroes to exist, and without those heroes, Doom has quite a lot of work to do by himself.
As revealed by Marvel,One World Under Doom#4 – written by Ryan North, with art by R.B. Silva – will featurethe otherworldly threat known as Dormammu will be Doom’s greatest threat yet, testing his newfound dominion over Earth like no other force in the Marvel Universe could.

As Marvel’s latest Sorcerer Supreme, Doom has his expanded magical powers, giving him the upper hand against every superhero in the world – but now he will have to face a world without them, and a grave existential threat that he must combat alone.
One World Under Doom#4 – Written By Ryan North; Art By R.B. Silva
As the advanced synopsis forOne World Under Doom#4 reads:
Sensing vulnerability, Dormammu has attacked Earth – and only Doom stands in his way! Dormammu has banished all other heroes to a pocket dimension, leaving Doom to stand alone against the Dark Lord of Chaos. But on the other hand… Doom has never needed allies to ensure that his will is done. It’s the ultimate showdown between two titans – with an ending you won’t see coming. As Earth hangs in the balance, it all comes down to DOOM VERSUS DORMAMMU.
With the crossover event still just taking shape, many fans have wondered whetherOne World Under Doomwill focus more on the worlds' heroes, and human population, rising up in resistance against the villain, or alternatively, if the story would place more emphasis on Doom’s struggle to maintain his newfound control. Now, this promise of a conflict between Doom and Dormammu has given fans more insight,suggesting that the latter will be crucial to the trajectory of the crossover.

If Doom wants to prove that Earth doesn’t need any “heroes” besides himself, then he’s got the perfect chance to do so with this intense, extradimensional confrontation.
Doctor Doom is going to have to live up to one of its major responsibilities, which is protecting the Earth from magical threats. As the solicit and cover also reveal, Doom’s main foe inOne World Under Doom#4 is Dormammu,ruler of the Dark Dimensionand arguably thegreatest foe of Doctor Strange, Doom’s predecessor as Sorcerer Supreme.If Doom wants to prove that Earthdoesn’t need any “heroes” besides himself, then he’s got the perfect chance to do so with this intense, extradimensional confrontation.

Marvel Fans Are On The Edge Waiting To Know The Long Term Consequences Of “One World Under Doom”
One World Under Doom#1 – Available Now From Marvel Comics
What remains to be seen is how Dormammu’s banishment of Earth’s heroes is reflected in Marvel’s titles outsideOne World Under Doom. A common pitfall of sweeping status quos is that they can feel unimportant in other books if not acknowledged. The crossover event is shaping up to be ambitious, and epic, butit is vital that the publisher commit to it across the board over the next several months, in order to really sell the impact ofDoctor Doom’sworld takeover and the consequences, whatever they might be.
Source:Marvel
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One World Under Doom#4will be available June 14, 2025 from Marvel Comics.