Low-budget horror in which a maniac butchers a fashion model (Eva Grimaldi) on a Caribbean island and leaves the body to be eaten by rats. The model's sister (Janet Agren) decides to investigate the murder herself. Along with her friend, Fred (David Warbeck), her investigation leads her to an unknown part of the island where they discover a rat-like man (Nelson de la Rosa). The creature is killed by Fred, but the true horror of its nature is just beginning.