It’s the penultimate issue of the most shocking X-Men mini-series of the century! Cyclops has learned the horrible truth of the identity of his captor, just as the X-Men have uncovered the pieces of Professor X’s long-held secret shame. Now they’ll battle through Sentinels and other machinations to meet their new enemy face-to-face, in the one place they hope to find Charles Xavier, assuming he survived the House of M. Also featuring a back up story that details the first time Emma Frost met Professor X.
— Description from Comic Vine community (comicvine.gamespot.com).
