>>88476192-there is a cloud of terrigen mist the size of australia roaming around the world.
-there used to be two clouds.
-the terrigen mist was released by black bolt
-it turns humans with latent inhuman genes into inhumans. it does nothing to normal humans and it kills mutants.
-the terrigen mists killed cyclops. Emma Frost used her telepathy to make everybody believe Cycops was still alive, she destroyed one of the two clouds (with fake telepathic illusion Cyclops next to her) , and she made Black Bolt kill fake Cyclops. (everybody thinks Black Bolt killed Cyclops but Cyclops was already dead from the terrigen mist, what Black Bolt destroyed was just a telepathic illusion)
-she did that because she wanted to give a dignified death to cyclops, die a martyr, and not just gassed to death.
-after that a truce was declared between inhumans and mutants, and Beast moved to the Inhuman city to see if he can find a scientific solution to the problem.
-he fails, and all mutants have to leave earth or they will die of poisoning in two weeks.
-the current Inhumans vs X-Men event happens because the X-Men prefer to go to war instead of leaving the planet, with the objective of destroying the terrigen mist cloud.