Since the launch of "Extraordinary X-Men" late last year, Marvel's mutants have been besieged by a Terrigen Mist cloud. While that green cloud gives life to new Inhumans by activating dormant genes in unsuspecting people, it's also made mutants sterile and placed their lives in jeopardy. We'll get to see what happens when the T-Mist arrives at a prison in a story in September's "Extraordinary X-Men Annual" #1 -- which Marvel has given CBR an exclusive first look at.

The oversized issue will feature two stories -- one by Ollie Masters and Carlo Barberi and another by Brandon Montclare and Rosi Kampe. Montclare is known for his work on Marvel's "Moon Girl and Devil Dinosaur," so it's appropriate that Montclare and Kampe's tale teams the brilliant Moon Girl up with the X-Men's resident genius Forge.

You can see art from the annual, as well as a few of the issue's variant covers, below.

EXM Annual Cover
"Extraordinary X-Men Annual" #1 cover by Victor Ibanez
EXM Annual Lim Variant
EXCLUSIVE: "Extraordinary X-Men Annual" #1 variant cover by Ron Lim
EXM Annual Young Variant
"Extraordinary X-Men Annual" #1 variant cover by Skottie Young
EXTRAXMANN2016001008_col
EXCLUSIVE: "Extraordinary X-Men Annual" #1 interior artwork by Carlo Barberi
EXTRAXMANN2016001008_col
EXCLUSIVE: "Extraordinary X-Men Annual" #1 interior artwork by Carlo Barberi
EXTRAXMANN2016001008_col
EXCLUSIVE: "Extraordinary X-Men Annual" #1 interior artwork by Carlo Barberi
EXTRAXMANN2016001B001_col
EXCLUSIVE: "Extraordinary X-Men Annual" #1 interior artwork by Rosi Kampe
EXTRAXMANN2016001B002_col
EXCLUSIVE: "Extraordinary X-Men Annual" #1 interior artwork by Rosi Kampe

EXTRAORDINARY X-MEN ANNUAL #1
OLLIE MASTERS & BRANDON MONTCLARE (W)
CARLO BARBERI & ROSI KAMPE (A)
Cover by VICTOR IBANEZ
VARIANT COVER BY RON LIM
YOUNG VARIANT COVER BY SKOTTIE YOUNG

NEW STORY ARC STARTS NOW!
• When the Terrigen Cloud threatens to wash over a prison and the warden refuses to protect its mutant inmates, the Extraordinary X-Men take matters into their own hands…and stage a PRISON BREAK!
• And when Moon Girl takes it upon herself to solve the Terrigen crisis, she may just find an unlikely ally…

40 PGS./Rated T+ …$4.99

"Extraordinary X-Men Annual" #1 arrives in stores on September 21.