You rescue a child you've never seen—and you know it's yours. A piercing scream shatters the morning stillness. As Smilla pulls the little boy from the icy lake, certainty strikes her like lightning: This is MY child! Which is impossible, because she was never pregnant. The boy's mother reacts aggressively to Smilla and quickly disappears with her son. But the very next day, Smilla encounters the woman again—she lives in the house next door. Her husband, Quentin, is more than grateful to Smilla for her rescue. Too grateful? Soon, an ominous premonition creeps over Smilla. She no longer feels comfortable in her own home, and then, before her very eyes, her husband, Jonas, transforms into a stranger. What game is he playing? When Smilla receives mysterious messages and someone breaks into her house, a merciless battle for sanity and truth begins. Whom can she trust? And what cruel secret connects her to the child that cannot possibly be hers?