The X-Men are a team of superhuman mutants founded by the world’s most powerful telepath, Professor Charles Xavier. Formed to defend human and mutants alike, the X-Men have disbanded in the wake of a tragedy. One of their members, Jean Grey, is killed in battle with the evil secret society known as the Inner Circle. But when a young mutant in Northern Japan goes missing, Professor X, gathers his scattered team back together to once more fight against the evils of the world. Traveling to Japan, the X-Men encounter the fanatical anti-mutant group, the U-Men, and discover what was important enough for Xavier to bring them back together. The answer is something that could potentially bridge the gap between mutants and humans, or tear the two species apart forever.