In the ongoing fight for supremacy between mankind and the human-alien hybrids, a fatal hybrid weakness has given humans the advantage. Until now, when Sara (Mabrey), the daughter of Eve (Natasha Henstridge), is born, she develops into the most genetically perfect alien form yet! Seeking to repopulate her kind, this dangerously beautiful femme fatal heeds an overwhelming drive to mate... while a crack military team trails her in an attempt to end the war between the two species forever!