A summer dream turns into a nightmare when a young woman named Luna (Lorena Corrêa) searches for her mother, who mysteriously disappeared on the last day of Carnival in Guarapari. After having a premonitory dream, Luna travels to the city during the holiday festivities and embarks on an investigation that leads her to an old, seemingly empty building, the Magdalena Building, where her mother and her boyfriend used to stay on the Espírito Santo coast. Upon breaking into the building, Luna meets the strange caretaker Dora (Gilda Nomacce), realizing that the strange space is inhabited by tormented souls. A dark journey begins, with Luna trapped in what seems like hell, a terrifying and sun-deprived landscape replacing the region's beautiful beaches and bustling tourist destination.