Anna lives with the acronym CODA (hearing child of deaf parents), but carefully hides her family history from her husband. The girl is afraid to give birth to a deaf child and secretly takes birth control pills. One day she learns about the tragic death of her brother and returns to her hometown for a while. The official investigation believes that there was an accident, but Anna categorically disagrees with the verdict and begins her own investigation. She recalls a mysterious basement where her brother regularly met with a strange man. As a child, Anna never dared to go into an abandoned building, but now, for the sake of truth, the girl is ready to look her fear in the eye.