Y: The Last Man - Book One is the first volume of the critically acclaimed comic book series written by Brian K. Vaughan and illustrated by Pia Guerra. The story takes place in a world where a mysterious event has caused all male mammals, except for one man and his pet monkey, to die. Yorick Brown, the last man on Earth, embarks on a journey to find his girlfriend and uncover the truth behind the catastrophe. Y: The Last Man is praised for its compelling characters, thought-provoking themes, and gripping storytelling.