Collecting the first year of Mark Millar's groundbreaking ULTIMATE X-MEN - issues #1-12 - in one colossal trade paperback! Featuring an all-new cover by ULTIMATE HULK VS. WOLVERINE artist Leinil Francis Yu! The world stands on the brink of genetic war. Mankind has made the first move, launching an army of giant, cybernetic executioners called Sentinels - programmed to target and eliminate the mutant DNA strand. Now, Magneto and his mutant terrorist cell are preparing to follow through on their threats of Homo sapien genocide. The only force that can prevent total annihilation: five awkward teenagers and their crippled mentor! Plus: The inexperienced X-Men must rely on the enigmatic and unproven Wolverine when they become pawns of the mysterious Weapon X program. Can Logan go it alone against the shadow-ops organization that transformed him into one of the world's most lethal killing machines? Also featuring the rare ULTIMATE X-MEN #1/2!