As the X-Men embark on their inaugural world tour, they must confront some
unsettling truths about their mentor, Professor Charles Xavier. Before founding
his school for young mutants, Xavier abandoned his only son, David, a mutant
with uncontrollable reality-warping abilities. Now, David has returned, looking
to exact revenge on the father who left him – and he's willing to eradicate
anyone who stands in his way. Will the X-Men be forced to kill Xavier's son to
end his threat against the world? Following the tragedies of their world tour,
the X-Men seek the calming protection of Xavier's school – but their
suspicions of his methods only increase. Xavier's mental blocks on student Jean
Grey's psychic abilities continue to crumble, and she grows increasingly
unstable – plagued by visions of a world engulfed in the flames of a fiery
phoenix. When the X-Men finally meet Xavier's mysterious financial backers,
Jean's hallucinations become reality as the otherworldly Phoenix takes
possession of the teenage telepath. Also included in this volume is a bonus tale
of Gambit, a Cajun street hustler who must use his mutant gifts to protect a
homeless boy in great danger.
This title collects “Ultimate X-Men” numbered 13–25.