THE IMMORTAL ONSLAUGHT! The all-powerful Onslaught has decided to become truly all-powerful...by adding the Phoenix Force to its own incalculable might! And one of the Wolverines is about to help him get there by turning against their leader, Phoenix. Old Man Logan, Age of Apocalypse, Zombie, Earth X and Jane Howlett - the Wolverines of five tragic universes - come to the end of their multiversal journey...but will it be their end as well?