In 1993, the Search for Extra Terrestrial Intelligence Project receives a transmission detailing an alien DNA structure, along with instructions on how to splice it with human DNA. The result is Sil, a sensual but deadly creature who can change from a beautiful woman to an armour-plated killing machine in the blink of an eye.
Sally and Gillian Owens, born into a magical family, have mostly avoided witchcraft themselves. But when Gillian's vicious boyfriend, Jimmy Angelov, dies unexpectedly, the Owens sisters give themselves a crash course in hard magic. With policeman Gary Hallet growing suspicious, the girls struggle to resurrect Angelov -- and unwittingly inject his corpse with an evil spirit that threatens to end their family line.
A group of aliens return to earth to take back some cocoons of their people they left behind from an earlier trip. They kept the recovered cocoons in the swimming pool of a house they rented in a small Florida town. Their mission is hampered by a number of old people from an elderly home nearby, who have been secretly using the pool and discovering the unusual power of these cocoons.