SAVING CANADA…FROM THE MUTANT MENACE?! GUARDIAN, PUCK, SNOWBIRD and SHAMAN return, as a terrestrial ALPHA FLIGHT bursts onto the scene! But what schism will pit these heroes against their former teammates AURORA, NORTHSTAR and NEMESIS, as well as Aurora's beau, FANG? The FALL OF X has changed the game, and will Alpha Flight soar to new heights…or be crushed under the weight of an impossible mission?