During a catastrophic outbreak, Ethan risks his life gathering supplies, only for his wife, Claire, and her old flame, Adrian, to steal his last food and push him toward the infected. Reborn seven days before the disaster, he warns his family to stock up and stay safe out of concern for his daughter, Mia, but they think he has lost his mind. Claire even uses Mia’s education savings to buy Adrian a sports car. Ethan stops arguing, sells his assets, and converts a cold-storage warehouse outside the city into a shelter.
The outbreak arrives as expected, trapping the family at home as they prepare for a vacation. When their food runs out, they follow clues to Ethan’s warehouse and beg him to open the door. He lets them into the quarantine area but refuses to support them unconditionally. Fighting over food, the once-close family begins blaming and betraying one another. When Mia is injured and develops a fever, they force the elderly Robert to venture outside for medicine. During the crisis, Ethan uncovers a family secret Claire has hidden for years and finally sees everyone’s choices when faced with life or death. Separated from them by a steel door, he must decide how to protect his daughter—and whether to open the door to those who betrayed him.
