As the winter of 1152 begins to set in and food supplies start to dwindle, several members of the Mouse Guard travel from city to city to improve relations and gather supplies for their headquarters in Lockhaven. The weather is not the only enemy, however, as hungry predators and the winding tunnels of Darkheather threaten to claim the Guard's lives before they can complete their task.

Maps on endpapers. "Chapters in this book first appeared in the comic book Mouse Guard : winter 1152"--T.p. verso. Volume numbering from spine.