In a remote village in Austria, an unsettling atmosphere permeates the home of a family consisting of twins Anna and Elias, who are facing an unusual autumn following the return of their mother, who has been absent for some time. However, something has changed in her and in her relationship with the children. Upon her return, their mother looks strange and exhibits an puzzling demeanor. The twins feel that something is off, especially when their mother tells them that she is not who she claims to be and urges them to distrust her.
In the midst of this confusion, the siblings begin to explore their surroundings, caught between loyalty to their mother and a palpable sense of distrust. A psychological tension develops, pushing them to question their reality and the nature of the maternal figure. As they delve deeper into this game of deception, their relationship reflects their struggle for identity and trust.
The situation escalates toward a harrowing climax when the children must decide whether to follow the advice of the woman claiming to be their mother or to confront the troubling truth they have been uncovering. The film explores themes of childhood insecurity, the perception of family, and the meaning of love, all set in an environment that overflows with subtle and disturbing psychological horror that will leave the audience on the edge of their seats.