In a hot night in Campoamargo, Almería, Ainhoa Sánchez (Mara López), daughter of the town's mayor, heads to a date in the greenhouse area, known as the "Sea of Plastic". Suddenly there is a power outage and Ainhoa is brutally attacked and killed in the dark. The next morning, the crops are irrigated by blood and nobody knows anything about the disappeared girl. The same day, Héctor Aguirre (Rodolfo Sancho), sergeant of the Civil Guard and chief of the Judicial Police, happens to arrive in Campoamargo and begins the crime investigation. A crime many people had reasons to commit, and few of them have alibi. Aguirre, a veteran of Afghanistan with severe anger management issues, knows he's in for the hardest investigation of his career.