X-Factor find themselves swept up in the iconic Marvel crossover event Inferno! Out of the frying pan, into the fire! As Inferno rages, Madelyne Pryor - now the Goblin Queen - targets her and Cyclops' infant son Nathan! Can X-Factor survive an onslaught of demons and keep Nathan safe? What happens when the crisis reunites them with the X-Men, whom they thought were dead? And will any of them be ready when Mr. Sinister strikes? In the aftermath, X-Factor must deal with the threat of Nanny and the Orphan-Maker, and rescue the boy called Alchemy! But when the team and their sentient Ship are kidnapped by a Celestial, they'll find themselves on an alien world, right in the middle of the devastating Judgement War! As X-Factor is separated on different sides of the conflict, another deadly struggle begins - inside Jean's own mind! Collecting: X-Factor (1986) 37-50, X-Factor Annual (1986) 4, Uncanny X-Men (1981) 242-243