"We won't get far, flying circles inside a jar..."
Having survived Civil Wars, World War Hulk, Secret Invasion, the near extinction of mutants, the destruction of everywhere they have called home in the past, and prolonged conflict with S.H.I.E.L.D. and the Avengers what's left of the world's mutant population have found a new home on the island of Krakoa under the guidance of a murdered and resurrected Charles Xavier, Magneto, and every major leader in the remaining mutant population with few exceptions.
Human fear and anger are at an all-time high, while mutant fear and anger are at an all-time high.
Former X-Men and Former Avenger Wolverine does not seem to care, passing his time brooding and drinking and wandering the Canadian arctic forests and the sparse civilization that eeks out a living where the civilized world meets wilderness.
The Shi'ar Empire has sent Xandra, future Empress, to Earth to deliver demand for the release of intergalactic criminal Jean Grey into the custody of the Shi'ar Empire. Unfortunately, the young and inexperienced Xandra made this demand to a New York State Trooper and her partner. The two officers, by way of a Google search, inform Xandra that Jean Grey is dead.
Xandra informs the officers, and Google, to "look again."
Set after Hickman's Avengers and Fantastic Four titles, and more or less right after Swords of X.