A family getaway. A record-breaking heatwave. A house that remembers the rain. Detective Inspector Tom Halloway needs a break. After a gruelling year investigating the darker side of humanity, a week of unplugged bliss at Crow's End Cottage seems like the perfect remedy for his strained family. But the secluded woods of Oakhaven offer no peace.
While a relentless heatwave grips the English countryside, the Halloways discover that the boundaries of reality are thinning. Inside the cottage, the air is heavy with the scent of salt water; upstairs, a wardrobe drips with icy condensation despite the sweltering heat.
As Tom's detective instincts clash with the impossible, his children are drawn toward a presence lurking in the shadows: Sarah, a girl in a yellow raincoat who claims the water is coming back. When the woods begin to warp time and the house unleashes a phantom storm, the Halloways must confront a tragic 1980s legend to save their children from being kept by the storm forever. In the depths of the woods, the land never forgets.