X-Men: Dark Phoenix Saga is a classic storyline in the X-Men comic book series, written by Chris Claremont and illustrated by John Byrne. This collection includes issues #129-137 of The Uncanny X-Men, which tells the gripping tale of Jean Grey's transformation into the powerful and destructive Dark Phoenix. With its intense action, complex characters, and emotional storytelling, the Dark Phoenix Saga is considered one of the greatest X-Men stories of all time. Whether you're a fan of the X-Men or a collector of comic book classics, this collection is a must-have.