WARNING: The following contains spoilers for Cable #3, by Gerry Duggan, Phil Noto and VC's Joe Sabino, on sale now.
As the young Cable has quickly become Krakoa's most eligible bachelor, the time-traveling mutant hero has attracted some very unwanted attention: The SpaceKnights. After claiming a cosmic blade for his own while rescuing a mutant child from certain peril in the island's jungles, Cable became a target for the SpaceKnights who had tracked the sword's energy signature to Earth. Kidnapped by the SpaceKnights along with Esme Cuckoo, the younger iteration of Nathan Summers quickly finds himself bartering with his captors not just to save one planet, but two in Cable #3.
Cable and Esme regain their senses to discover that the three Galadorian SpaceKnights have taken them to the North Pole, with Cable's newly acquired sword. Referring to the sword as the powerful Light of Galador, the SpaceKnights recount how their home planet was destroyed. Since then, the three have searched the cosmos for the blade as it has the power to completely terraform a planet to match the condition of Galador and give the SpaceKnights the chance to rebuild their civilization anew. With Cable possessing an immediate connection with the mythical sword, the SpaceKnights plot to coerce him into plunging the Light of Galador into the North Pole and completely transforming the Earth, albeit at the expense of those that already live on the planet.
Cable hastily negotiates for the SpaceKnights to back down from their plans to rewrite Earth's environment to match Galador instead offering a compromise: In exchange for leaving Earth alone, Cable will use his own experience as a time-traveling superhero to take them with him to Galador's past and change history by saving the SpaceKnight's homeworld from a cataclysmic event. In order to do this, Cable needs to scavenge the technology necessary to make the trip: From the techno-organic arm buried with the rest of his older, classic incarnation that he killed shortly before the start of Dawn of X.
The SpaceKnights agree to Cable's terms but all are shocked to discover that someone has beaten them to the punch in robbing the elder Cable's grave, making off with the entire body. Nate tracks the older body down to Deadpool's and takes the robotic arm after a brief confrontation with the Merc with a Mouth, the most macabre part of Cable's mission to save Earth and Galador behind him. With Cable's time-travel device in tow, Nate leads Esme and the three SpaceKnights on a mission across time and space to travel back to Galador's past and save it from its historical destruction.
With the possible exception of Bishop, there is no member of the X-Men more experienced in time-traveling to change history than Cable. The classic iteration of the hero first traveled back in time to fight Stryfe and the Mutant Liberation Front while his younger counterpart had traveled back to restore the space-time continuum by returning the original X-Men to the natural point in time.
An impromptu team-up with the SpaceKnights is more out of the mutant superhero's wheelhouse but, with the fate of two worlds riding on the success of this interplanetary, time-bending mission, Nathaniel Summers will have to prove himself up to the task, armed with the Light of Galador once again. At the very least, the sudden cosmic detour continues to provide Nate with one hell of a first date with Esme Frost.