Plot: A “cure” for mutants has been found, and is being offered to mutants at clinics. Fearing that “voluntary cures” is only the beginning, Magneto (McKellen) and his Brotherhood of Mutants intend to stop it before all mutants are “cured”. His only obstacle? The X-Men. But, is Magneto the real threat, or will the X-Men suffer more at the hands of an old friend? Based on the Marvel Comic characters.