Sara's grief is a bottomless pit. When a mysterious man from her support group offers her a way back—a chance to see her dead father for just two more days—she can't refuse. But the artifact that rewinds time is not a gift; it's a curse. Each trip back unleashes a shadowy predator that hunts through history, and the price of defying fate is paid in flesh and sanity. Now, trapped in a horrifying loop, Sara discovers that the monster hunting her is a glimpse of her own terrible future.