All New X Men Vol 4

Collects All-New X-Men #18-21, X-Men: Gold.

When a sinkhole appears under mysterious circumstances in the middle of the Black Rock Desert, the X-Men go to investigate... But little do they suspect that the phenomenon has connections to old allies, and enemies! Then, trapped deep underground in the sinkhole, Storm battles her claustrophobia while trying to find answers. Meanwhile, her teammates above ground discover that the phenomenon has ties to old enemies. Collecting X-Men (2012) #23-26.

Since the discovery that the Terrigen Mists-the key to unlocking an Inhuman's hidden potential and powers-are LETHAL to mutants, the X-MEN and INHUMANS have been locked in a cold war. But as the Terrigen seeps into the Earth and reaches an irreversible tipping point, the X-Men are spurred into action to ensure the future of their species! And for Jean Grey and Fantomex, this means taking out of commission the Inhumans' deadliest weapon: Karnak! Collects All-New X-Men (2015) #17-19, Annual #1, X-Men Prime #1.

More than ever, hatred and fear has made the world a dangerous place for mutants. But as the few remaining X-Men retreat into seclusion, a handful of mutant teenagers refuse to allow their destiny to be decided for them! And no one is more concerned about their fate than Scott Summers, whose young shoulders must bear the heavy weight of the terrible acts committed by his adult counterpart. Cyclops is joined by three of his timetorn teammates - Beast, Iceman and Angel - as well as the All-New Wolverine, Kid Apocalypse and Oya. Together, they're heading out on the highway, looking for adventure, intent on writing their own futures! But when they encounter the baleful Blob, their road trip may end before it begins...COLLECTING: ALL-NEW X-MEN 1-6.

Collects All-New X-Men #25-29.

The next stage in humankind is here, and the Uncanny X-Men are leading the way! With original X-Man Cyclops at the revolution's helm, Emma Frost, Magik and a new generation of mutants defend and educate all homo-superior as warriors of the atom! But after relentless persecution from a society that fears and hates them, the Uncanny X-Men are going on the offensive! Their target? The international spy organisation S.H.I.E.L.D! However, as Cyclops' team fights to save their species, are they only digging themselves into a deeper and more dangerous hole?

Collects New X-Men #134-138. Professor Xavier's School for the Gifted is a sanctuary, a safe haven for oppressed mutant youth. But the unimaginable happens when a student reinvents himself as Kid Omega and decides to take over the school. It's mutant vs. mutant...will the school ever be the same?