Greg Sanderson is helping his wife, Jan, to recover from a nervous breakdown and revive their strained marriage. Their privacy is interrupted by the arrival of Greg's stunning and mysterious sister, Laura. Jan's paranoia deepens as she suspects that Greg's and her sister's relationship is too close. In her desperation, she confides her fears to the landlord but his weird reaction only creates more confusion.
En 1970, durante un eclipse total de Saturno, planeta que gobierna las emociones, nacen tres niños. Diez años más tarde, estas criaturas, de aspecto inocente, se han convertido en despiadados asesinos que no levantan sospechas de nadie debido a su joven apariencia. ¿Qué pasa cuando una adolescente y su hermano menor descubren la horrible verdad?
