Plot Mutants are on the verge of X-tinction, it seems, when US business Worthington Industries discovers a cure for mutation. This scientific breakthrough complicates and intensifies the battle — both physical and ideological — between Professor X’s (Stewart) integration-friendly X-Men and the human-hating muties let by Magneto (McKellen)...Verdict Singer’s absence is felt but not fatal. By adding too much new blood Ratner loses some of the original DNA, but with its nifty set-pieces and a few nasty surprises, X3’s still a worthy enough sequel to ensure it’s no Last Stand.