Some grandmothers leave seaside cottages, while popular writer Emilia Vyshinskaya inherited an old estate among the Polesie marshes. But this turned out to be exactly what Emilia needed, experiencing a creative and family crisis. Taking her younger sister with her, Emilia arrives at the estate as the new mistress. She will have to learn what secrets the Vyshinskys have hidden for centuries, who lives in the forest behind the estate, and why Agatha Vyshinskaya, who left her an inheritance, was called the Keeper.