Barra da Tijuca, West Side Zone of Rio de Janeiro. A wave of murderers plague the area. What starts off as a morbid curiosity for the local youth, slowly begins to spoil away at their lives. Among them is Bia, a 15-year-old girl. After an encounter with death, she will do anything to make sure she is alive.

Many, many years ago, the beautiful Medusa was severely punished by Athena, the virgin goddess, for the loss of her purity. Today, Mariana belongs to a world where she must do her utmost to keep up the appearance of a perfect woman. In order not to fall into temptation, she tries hard to control everything and everyone around her. However, the day will come when the urge to scream will be stronger than it ever has been.