The world of film never fails to surprise: Mala Rodríguez and adult film star Apolonia Lapiedra join the cast of this foray into slasher and home invasion, with a distinct auteur perspective. A new scream queen is born: at just 24-years-old and already nominated for a Goya (Best New Actress for her portrayal of Verónica, 2017), her name is Sandra Escacena. In this spine-tingling horror feature, Escacena plays Ale, who, along with her partner and dog, is enjoying a romantic weekend in a treehouse cabin in the Zeanuri forest. Stepping outside at the dead of night to investigate why her loyal companion is barking, she witnesses her boyfriend fall from the treehouse. A year later, Ale returns to the scene, convinced that the incident was no accident.