The storyline consists of a core eight-issue comic book limited series written by Brian Michael Bendis and illustrated by Olivier Coipel, and a number of crossover tie-in books. Its first issue debuted in June 2005 as a follow-up to the events of the "Planet X" and "Avengers Disassembled" storylines, in which the superhero Scarlet Witch suffered a mental breakdown and tried to alter the fabric of reality to recreate her lost children. Scarlet Witch's father, Magneto, and her twin brother, Quicksilver, played major roles in the series.