THE NEW BROTHERHOOD! Ten years from now, Mars has been destroyed – and now STORM wants revenge! To get it, the New Brotherhood will battle their way through Hell to seek the greatest secret of the Sinister Age…but are they fighting to save the world – or end it? And who is the man called IRONFIRE?

In the culmination of years of planning, the devious Mister Sinister finally makes his move, and the X-Men are caught right in the center of it! From his vaunted position on the Quiet Council of Krakoa, Mister Sinister has plotted and schemed. Now, at last, his plans come to fruition beyond his wildest dreams...and his darkest nightmares! Can the X-Men survive the experience? Can anyone? Collects Sins of Sinister #1, Immoral X-Men #1-3, Storm & The Brotherhood of Mutants #1-3, Nightcrawlers #1-3, Sins of Sinister: Dominion #1.