Collects Ultimate X-Men (2000) #21-25. The Hellfire Club extends an invitation for the X-Men to join them. Little do the heroes know that a dark plan has been in the works for years and is about to come to fruition!
Mark Millar, Ty Templeton, Joe Staton, Neil Vokes, Bret Blevins, Min S. Ku, Cameron Stewart, Craig Rousseau, Mike Manley, Darwyn Cooke, Rick Burchett, Aluir Amancio & Philip Bond