Valeria Ferro, an inspector of the Turin Homicide Squad, is a young and extremely skilled police officer, with a keen intuition and an obsession: the truth. But her past reveals a wound that dates back to her adolescence, when her mother, Lucia, was convicted of her husband's murder.
Three sisters, Stella, Luce and Aria, live in an isolated house, immersed in the shadows, submitted by a violent and authoritarian father, a religious fanatic obsessed with the end of the world, who keeps them prisoners behind locks and closed windows, under the pretext that the Apocalypse has finally arrived.
