In 2009, against the backdrop of the real estate crisis, Cassie Fowler, Rosemarie DeWitt, a divorced realtor, scrambles to keep her life together in Harding, Arizona, living with her 14-year-old daughter, Morgan, Lolli Sorenson. The day begins with a sharp blast of stress: Cassie endures a cutting confrontation with her aggressive boss, Gary, Seth Rogen, while on the phone about looming foreclosure on her own home. The tension spikes when Sonny, a volatile client, bursts into the office furious about a house’s plummeting value, and what starts as a heated exchange spirals into deadly violence as Gary is shoved off a ledge. The shock of that moment sits in the air as Sonny, intent on keeping his secret, grabs Cassie, telling her that she’ll walk away only if she stays silent.
Sonny’s plan quickly fractures into a brutal nightmare as he doubts Cassie’s honesty and decides to tighten his grip. He binds her and introduces his ex-wife, Vikki, Kaitlin Olson, into the sick equation, triggering a climactic confrontation that ends with Vikki’s grisly murder by a granite block. Cassie’s attempts to calm the escalating madness only feed Sonny’s control games, and he takes the terrifying step of kidnapping Morgan, driving the danger directly to Cassie’s doorstep. The pair’s safety net unravels as Sonny rolls into Cassie’s home with a predatory calm, pretending to be in control of a family crisis and forcing Morgan to stay hidden.
As the day grows darker, Morgan tries to reach out for help but is forced to improvise a desperate escape. She manages to call 911, though Sonny deceitfully uses another line to locate her, and the tension spikes into a tense chase through the neighborhood. Cassie, quick on her feet, slips away and reaches the guard shack at the development’s edge, where the guard reluctantly lends her a phone. With a renewed sense of urgency, she rings her ex-husband Scott, Luke Wilson, and begs for his help. Cassie then makes her way to sheriff Coburn, David Alan Grier, and the guard who arrives just in time to disrupt the immediate threat, only to be fatally sprayed by pepper spray and shot by Sonny, who appears like a phantom hunter moving through the quiet night.
The chaos intensifies as Sonny reveals his knowledge of Cassie and Morgan’s location, forcing Cassie to push through fear and take action. The confrontation turns personal: Sonny abducts them at gunpoint, and a dramatic struggle unfolds in the house as Cassie and Morgan fight to survive. A tense standoff ends with Cassie striking back, shoving Sonny into a deadly fall, and Morgan’s quick thinking helping to carve a path to escape. They flee the immediate danger, seizing the keys to an elderly neighbor’s car and driving toward the housing development’s gate, only to be pursued by Sonny in a guard’s uniform. A furious gunfight erupts as the car’s tire is shot out, leaving them stranded in a burning maze of abandoned houses that are being used for marijuana production.
In a tense montage of pursuit, Cassie and Morgan seek shelter in one lit home, while Scott and his girlfriend Kelsey, Elizabeth Gillies, arrive at the guard shack hoping to lend a hand. Sonny uses his ruse to manipulate them into believing he is the security guard, steering them through the darkened streets as danger closes in. The moment of truth comes when Cassie, hearing Scott’s voice and seeing Kelsey in danger, urges Scott to fight back, but Sonny fatally shoots Scott. The attempted escape spirals into catastrophe when Kelsey’s car crashes into a light pole, cutting the power and igniting a brush fire that rages toward the marijuana operation’s structures. In a desperate bid for safety, Kelsey is killed in the explosion as she tries to retrieve a weapon from the trunk.
With the lights out and the fires spreading, Sonny corners Cassie and Morgan in a dim, unfinished basement. A nerve-wracking chase culminates in a final, brutal struggle where Morgan shines a flashlight, momentarily disorienting Sonny and giving Cassie the chance to strike him with gardening shears. The furious pursuit ends when Sonny is knocked into the basement opening, his body meeting a fatal fall. Together, Cassie and Morgan stagger out into the night, leaving behind a housing development engulfed in flames as the fires continue to spread, a stark tableau of resilience forged in fear and determination.