Uncanny X-Men #129 is the first appearance of Kitty Pryde and Emma Frost, and the beginning of the Dark Phoenix Saga. The X-Men are attempting to recruit Kitty Pryde, a young mutant with the power to phase through solid objects, when they are attacked by members of the Hellfire Club. The Hellfire Club is a secret society of wealthy and powerful individuals who use their influence to control the world. The X-Men are defeated by the Hellfire Club, but they are able to escape with Kitty Pryde. This issue sets the stage for one of the most epic X-Men stories of all time.

This book is signed by writer Chris Claremont and has been professionally graded and certified by CGC.