In a secluded, idyllic house on the edge of the forest, twin brothers Lukas and Elias are enjoying their summer vacation. They roam freely between a forest lake and a cornfield, eagerly awaiting their mother's arrival. But when she returns from the hospital with her face bandaged, all their previous certainties vanish. They can barely recognize their mother in the stern woman who now stands before them. Soon, they are gripped by the uneasy feeling that a stranger is taking control. An existential struggle for identity and basic trust ensues.