Collects Ultimate Comics X-Men #18.1 & #19-23. Kitty Pryde tries to lead a nation of mutants, but someone close to her has different plans! Meet Mach Two, former Morlock tunnel refugee turned mutant resistance fighter! Will she side with Kitty, or become a dangerous new enemy? Plus: Rogue gets an unexpected visitor as Storm helps terraform the reservation. The mutants might hold the key to solving world hunger, but what is the deadly cost? What is the Sentient Seed and why does everyone want it? And as the Iron Patriot guest-stars, Mach Two's play for power takes a new turn - and leads to a fatal showdown!