The second season sees Cyclops and Jean get married and become the targets of Mister Sinister, who hopes to use the genetically perfect combination of their DNA to create an army of obedient mutants. Morph returns, having been rescued by Sinister and brainwashed into forcing the X-Men apart. The season also features the growing rift between humans and mutants, spearheaded by the Friends of Humanity, an anti-mutant group who lead the persecution of all mutants. Apocalypse also returns, developing a deadly plague to be blamed on mutants, fueling mutant hatred. A parallel narrative of Professor X and Magneto being lost in the Savage Land runs throughout this season.