In the wake of a summer storm, terror descends...David Drayton, his son Billy, and their neighbor Brent Norton join dozens of others and head to the local grocery store to replenish supplies following a freak storm. Once there, they become trapped by a strange mist that has enveloped the town. As the confinement takes its toll on their nerves, a religious zealot, Mrs. Carmody, begins to play on their fears to convince them that this is God’s vengeance...