Logan is asked by his old friend, a cop from Japan, to help him take down Shingen Yashida's crime syndicate and save Mariko, Logan's lost love, from forced marriage arranged by her father Shingen. Yukio, a female assassin, helps him.
Just as teenage mutant Kitty Pryde is welcomed to the X-Men, the team of mutant heroes are called into battle to prevent Magneto and his Brotherhood of Evil Mutants from crashing a comet into the Earth.
The Daily Bugle's all-star publisher, J Jonah Jameson, is visited by four spirits on Christmas Eve in an attempt to get him to change his selfish ways. If they don't succeed, the future of planet Earth is doomed.