When a cure is found to treat mutations, lines are drawn amongst the X-Men—led by Professor Charles Xavier—and the Brotherhood, a band of powerful mutants organised under Xavier's former ally, Magneto.
I think the X-Men films have been so popular because the X-Men dare to be different. The concept of the X-Men strays far from superhero conventions. If you approach the X-Men films thinking you're getting something akin to Superman, Spider-Man or Batman, forget it.
The unique concept of the X-Men is that humanity is starting to evolve to the next level and humans all over the globe are starting to manifest superhuman powers from the mutant "X" gene. Two mutant leaders, who are also old friends, take highly contrasting positions. Charles Xavier... read the rest.
Some material may be inappropriate for children under 13. Films given this rating may contain sexual content, brief or partial nudity, some strong language and innuendo, humor, mature themes, political themes, terror and/or intense action violence. However, bloodshed is rarely present. This is the minimum rating at which drug content is present.