In a world mostly wiped out by the plague and embroiled in an elemental struggle between good and evil, the fate of mankind rests on the frail shoulders of the 108-year-old Mother Abagail and a handful of survivors. Their worst nightmares are embodied in a man with a lethal smile and unspeakable powers: Randall Flagg, the Dark Man.

A father and daughter are on their way to dance camp when they spot the girl's best friend on the side of the road. When they stop to offer the friend a ride, their good intentions soon result in terrible consequences.

Samantha Kingston has everything. Then, everything changes. After one fateful night, she wakes up with no future at all. Trapped into reliving the same day over and over, she begins to question just how perfect her life really was.