Maristela is being tormented by a constant dream: a creature emerging from the waters of Pajeú Creek. The strangeness and insistence of the nightmare start to disturb the sleep and the daily life of Maristela who, looking for a solution to her problem, starts a research about the creek, its history and its disappearance. The nightmares don't stop. Dream and reality mix. People close to Maristela start to disappear, just as Pajeú disappeared. Her anguish increases along with the fear of vanishing herself.