Collects First X-Men #1-5.The secret history of the X-Men...BEFORE Xaviers team! What terrifying threat led the solitary secret agent nicknamed Wolverine to form a mutant strike force, decades in the past? As the government solidifies its plan for the new subspecies known as mutants, Wolverine and his ally Sabretooth recruit a certain Master of Magnetism and Prince of Atlantis to their cause. And as the terrifying new villain Virus attacks Wolverines ragtag team, the curtain is pulled back on the beginning of the Sentinel program! Be here for the event that rewrites everything you know about the X-Mens past!