Isolated in her remote beach house, Clara (Victoria Maurette) is forced to confront the unexpected arrival of her toxic ex-lover, Tomás (Demián Salomón). However, Tomás has returned as a supernatural, incubus-like entity that feeds on terror and women's psychological collapse. As Clara attempts to defend herself, she discovers the creature is virtually indestructible—resurrecting every time she kills him, trapping her in a cycle of violent psychological and physical torment.