The Argonaut, a sophisticated naval salvage ship, hovered above a sunken ship out at sea. Captain Claude Bertrand (Raymond Accolas) had brought his crew to excavate a gold treasure, but what they found was a strange, radiant canister, hidden underneath the hold. Back on land, Bertrand stored his discoveries inside a secured warehouse. One of his crewmen, a young sailor named Randy (Graeme Millington), returned with a group of thieves to steal the treasure. Intrigued by the canister, Randy opened it and a green glowing tenticle shot out from the container and grabbed him by the face. An alien being known as Ha'gel had been freed of his prison canister. Ha'gel assumed the form of Randy, leaving his victim's body behind, a crystalized husk. Randy's friends saw the transformation and drew their guns. Ha'gel released his shaqarava energy, blasting them into a million pieces. At Taelon headquarters, Da'an (Leni Parker) was relaxing in an energy shower when he bolted upright. The Taelon consciousness had been invaded by an intruder. The Taelons knew Ha'gel had arrived.

The next day, William Boone (Kevin Kilner) was called to the crime scene by his friend Sgt. Morovsky (John Evans). Boone realized they were up against an unknown alien killer when he saw Taelon writing on Ha'gel's empty canister. Ha'gel, "wearing" Randy's identity, went to a bar, the Flat Planet Cafe, in fact, where he picked up a young woman. He took her back to her loft where he performed an alien mating ritual. The energies that Ha'gel/Randy released were so intense that they shattered the apartment and killed the woman. At the crime scene the next day, Boone and Morovsky were astounded at the destruction in the apartment, but the absence of trauma to the victim left them confused. They took the woman's body to Dr. Park, a Resistance sympathizer, who has already examined the real Randy's "husk" and was shocked to realize he wasn't dead.

As the Resistance members tried to find out more about Ha'gel from the Taelons, all they would tell Boone was that the alien was the last of a criminal caste, the end of his genetic strain. What the Taelons were hiding is that Ha'gel was the only survivor of a race which saved the Taelons from extinction, only to be destroyed by the Taelons themselves. Afraid that Earth would learn the truth, Quo'on (Brooke Johnson) and Zo'or (Anita La Selva) enlisted Lt. Siobhan Beckett (Kari Matchett), the English Companion's Implant, to help eliminate Ha'gel. She had been following her own agenda, determined to prove Lili (Lisa Howard) was working for the underground.

The police force was also enlisted to help hunt down Ha'gel -- a move that outraged Boone, since only a skrill would be effective against the alien.

Ha'gel/Randy was confronted by uniformed officers as they searched for him. Ha'gel blasted two police cars with his shaqarava, and secretly assumed the identity of Officer Reed (Scott Gibson). In Dr. Park's lab, Randy re-entered his body, but was unable to recall anything about his transformation. Ha'gel, now appearing as Reed, was at the scene of the shoot-out where Agent Ron Sandoval (Von Flores) and had joined the investigation. Ha'gel/Reed led Sandoval into the alley and assumed the FBI agent's identity in the same bizarre transformation.

Beckett had stepped up her efforts to entrap Lili and trailed her to the church above Resistance headquarters. Unaware she was being followed, Lili entered the secret passageway. Uncertain of the exact location of the passageway, Beckett summoned Sandoval to the church. Unbeknownst to Beckett, Sandoval was now really Ha'gel. Underground, the Resistance members realized Beckett was on the threshold of discovering their headquarters and they sent for Boone.

Meanwhile, Ha'gel/Sandoval brought Beckett under his power and performed his mating ritual with her in the church. Beckett was finally left crumpled on the floor. Boone arrived and realized that Ha'gel had taken over Sandoval's body. Boone confronted Ha'gel/Sandoval as Lili pulled Beckett to safety inside the Resistance headquarters. Ha'gel/Sandoval fired on Boone as Boone tried to convince him that they were on the same side. Just as Ha'gel/Sandoval started to respond to Boone, Morovsky arrived with the police force. In the shoot-out that followed, Boone killed Ha'gel, but was badly wounded himself. Sandoval re-entered his body unharmed, but Boone's life remained hanging in the balance. Beckett survived the joining with Ha'gel, but was unconscious and remained sheltered in Resistance headquarters, now pregnant with the alien's offspring.

Zo'or, Quo'on and Da'an debated the future of the Taelons on Earth. Then Zo'or and Sandoval went to Boone, who was on futuristic life support in a huge tank of blue fluid. As Sandoval watched, Zo'or eliminated Da'an's right-hand-man and friend, Boone.

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