Shape-changing, limb-regenerating monster "Eve" gives birth to alien/human half-breeds who proceed to kill her. Fleeing the ambulance containing Dr. Abbot, the hybrid pack ventures out into the world to try and (unsuccessfully) mate with humans... in the same gore-filled fashion as mom used to. However, Dr. Abbot manages to snag one, naming them "Sara" (Sunny Mabrey), their intent being to create a perfect human and be the envy of their peers. Years later, some of the failed offspring return, trying to mate with Sara to renew their bloodline. That gets in the way of Sara looking for her own "perfect man", all the while with government forces planning to take her out for good.