Tormented by recurring nightmares of a place she has never been, Marlene
(Sandra Hüller, Requiem) cannot help but investigate when she discovers the
place is real. Once there, she suffers a breakdown and is admitted to a
psychiatric ward. Determined to discover what happened to her, Mona (Gro
Swantje Kohlhof), her daughter, follows and finds herself in Stainbach, an
idyllic village with a dark history. What is it that so tormented her
mother, and the people of Stainbach? What is the source of the nightmares
she suffers? And who is the mysterious Trude that lives in the forest?