Marvel Comics Universe and Uncanny X-Men #20 Spoilers follows.
Traitor Exposed!
CHAOS Ahead Of House Of X / Powers Of X Reboot? (Legacy #642)
The book opens with a dramatis personae…
…followed by a storyline catch-up and creators’ credits page.
Today, the mutant cure vaccine seems to have some serious side effects.
A few days earlier, the Dark Beast explained he found a way to counteract the vaccine so that mutant don’t get cured; its harmless and airborne and will counteract the vaccine.
Banshee, using his power of flight, gets the Dark Beast’s countermeasure in the air.
Today, the Uncanny X-Men and the Hellfire do battle, but…
…defeats Mister Sinister anyway.
The Dark Beast reveals that all was not as it seems with his countermeasure; it will negate the effects of the vaccine, but in some cases it will cause the kids pain and go into coma. Parents will need to either not vaccinate their kids or if they do so, knowing the toll it may cost, their xenophobia and racism will be revealed.
Illyana Rasputin has heard enough and seemingly kills the Dark Beast, while…
…summons ALL the X-Men!