Renee Palmer (Jayne Heitmeyer) meets with former Doors International associate Zack Winslow (Matthew Ferguson) at the Flat Planet Café. A bundle of nerves, Zack, a young man who's now a bioengineer and geneticist for Tenzer Dynamics, refers to his new employers as bloodsuckers, telling Renee he can't hold on much longer. Suddenly, he dashes from the café. Renee finds him in a dark alley just as he pulls out a gun and holds it to his head. Renee immediately grabs his arm, sending the gun to the ground. As they wrestle for the weapon, Zack exposes an Atavus cleave. When Renee realizes he is a hybrid, she shoots him in self-defense. With his dying breath, Zack tells her that a special project will go on-line tomorrow, but "domino" will stop it. Hearing approaching police sirens, Renee flees.

At Zack's apartment, Renee searches for clues as to what Zack meant by the word "domino." Accessing his home computer, Renee is confronted at gunpoint by Zack's distraught father, Harry Winslow (Peter MacNeill). Convincing him that she is a friend of Zack's, Renee uncovers the phrase, "A Quiet Ubiquitous Atavus Reveals Its Underhanded Motives," in a file named "domino." Harry begs Renee to find out why his son died.

Renee sneaks into Tenzer Dynamics and follows the company's head, Dr. Charles Tenzer (Michael Sarrazin), to Zack's basement laboratory. There, she watches Ronald Sandoval (Von Flores) and a Tenzer technician trying to break into Zack's computer, which sits adjacent to an Atavus hybrid chamber. With help from Dr. Tenzer, Sandoval accesses a pre-recorded video message from Zack, who says he has eliminated the formula he had been working on and has provided a digital program to a trusted friend, Renee, that will destroy the entire project. Sandoval detects Renee's presence and opens fire on the airshaft, but Renee is able to climb to safety.

That night, when Dr. Tenzer gets into his car outside the building, he finds Renee waiting. She forces him at gunpoint to drive to a nearby portal and transports them back to Augur's lair, where she confronts him about Zack's death. Remorseful, Dr. Tenzer tells her that financial woes had forced him into a partnership with Sandoval on the project of trying to replicate an Atavus hybrid chamber. He informs her that Zack's role was to come up with the formula that would transfer human DNA during the "joining" process. When Renee tells him about the horrors of the newly arrived aliens, Dr. Tenzer agrees to help her destroy the lab.

Meanwhile, Sandoval has Zack's body transported to the Taelon Mothership, where Howlyn uses an Atavus mind-searching technique on him to discover the precious formula. Back at the lab, Renee and Dr. Tenzer find a horde of chambers in an adjacent room and deduce that Howlyn and Sandoval are intending to mass-produce hybrids. Sifting through memos on Zack's desk, Renee notices the young man's apparent fondness for acronyms. Suddenly, Zack's cryptic clue about the "ubiquitous Atavus" makes sense, with the first letter of each word combining to form the word "aquarium." She contacts Harry, who finds the computer disk containing the failsafe program hidden inside an aquarium at Zack's apartment. Renee obtains the formula from Harry just before security guards seize her and Tenzer. Fighting their way free, they speed to Tenzer's office.

As Sandoval and a technician begin inputting the formula into Zack's computer console to successfully activate the replicated chambers, Tenzer and Renee load the failsafe program into the Tenzer Dynamics mainframe. The program works, recombining the elements of the Atavan chamber formula to form a powerful explosive. Tenzer, Renee, Sandoval and everyone else in the facility scurry to safety seconds before the building explodes, and all of the replication chambers are successfully obliterated.

This episode synopsis was originally produced by The Official E:FC Website and remains the property of Tribune Entertainment.