After a virus kills most of the people in the world, a handful of survivors choose sides-- a world of good led by 108-year-old Mother Abigail-- or evil led by a man with a lethal smile and unspeakable powers: Randall Flagg, the dark man.

Wolves of the Calla continues the adventures of Roland, the Last Gunslinger and survivor of a civilized world that has "moved on." Roland's quest is ka, an inevitable destiny--to reach and perhaps save the Dark Tower, which stands at the center of everywhere and everywhen. This pursuit brings Roland, with the three others who've joined his quest to Calla Bryn Sturgis, a town in the shadow of Thunderclap, beyond which lies the Dark Tower. Before advancing,...

To the children, the town was their whole world. To the adults, knowing better, Derry, Maine, was just their home town: familiar, well-ordered, a good place to live. It was the children who saw--and felt--what made Derry so horribly different. In the storm drains, in the sewers, It lurked, taking on the shape of every nightmare, each person's deepest dread. Sometimes It reached up, seizing, tearing, killing.... The adults, knowing better, knew nothing....