Two sisters are moving into a rather shabby looking old dark house. Josefina (Ana Luisa Peluffo), the older of the two, has taken the role of replacement mother for her sister Sonia (Anais de Melo), although that doesn't seem to discourage her from practicing the kind of sisterly massage women practice when they are not having pillow fights or pajama parties. As is so often the case with old dark houses, strange things begin to happen to the sisters. At first, it's just the appearance of an unnaturally persistent rat (played by an anonymous rat method actor of the highest caliber), the shadow of a woman (Ricardo Cortes) roaming the house - the simple spooky things. Soon the strange activities begin to increase.