Ten years into a twisted future, MR SINISTER unleashes his private army of THE LEGION OF THE NIGHT. Meet WAGNERINE, commanding this killer crew of brainwashed hybrids, each one a genetic mix of NIGHTCRAWLER and another one of Marvel's most murderous mutants! Mysterious forces seek to break Sinister's control over these fatal fanatics - to turn them AGAINST HIM. But who are they? And what are their true motives...? Enter MOTHER RIGHTEOUS... and a meeting of the most powerful players in the Universe...

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.