Collects no. 19-24 of "Astonishing X-Men" and no. 1 of "Giant-Size Astonishing X-Men," in which the team of super-powered mutants rushes to save the Earth from the destructive plans of the Breakworld.
Emma Frost's erratic behavior has the X-Men in a downward spiral; an unlikely union may be the final straw; and, the new Hellfire Club finally makes its move.
Kittie Pryde, a mutant, was born with unusual superpowers that set her apart from others; but her world is changed when she is invited to study at Professor Xavier's School for Gifted Youngsters, making her the only girl in a school full of boys.
