Oblivious to Boone and the resistance, Jonathan Doors comes out of hiding and launches a media campaign against the taelons, leaving Boone to clean up the mess.

Sandoval's CVI is degenerating. While Dr Belman works to restore his CVI and save his life, Sandoval, free from his CVI, escapes to reunite with his wife, only to put her life in danger. Boone learns that Sandoval's CVI contained information about the Taelon's mission on earth, and tries to save Sandoval's life.

At a Conference of Psychic Sciences, "The Commonality" the Taelon psychic link has been invaded and the secret plans for Earth are known. Katya Petrenko possesses incredible psychic gifts and an interest in Boone. She confronts Zu'or, telling him that the Taelons must change their approach to humans, or they will destroy both races. Katya reveals that a taelon named Ma'el gave some humans the gift to break into "The Commonality". As Katya dies, Dr. Belman performs a brain transfer of all of Katya's knowledge to Boone.

The Taelons introduce interdimensional travel to human customers. A young deaf-mute boy and his mother become separated during their travels through the portal. The boy appears and is now able to speak and hear. The boy is examined by Dr. Park, a resistance doctor, who discovers that he has been implanted with a device to restore his missing senses. Boone suspects that the Taelons are using the portal to perform experiments on humans. Doors sends Sahjit through the portal with a tracking device.

Divers stumble across a strange radiant canister while searching for sunken treasure. Upon opening the canister an alien being known as Ha'gel is released from its prison and assumes the identity of one of the crew and destroys the others. Boone is called to the crime scene and his suspicions are raised when he finds Taelon writing on the empty canister. Upon questioning, the Taelons tell Boone that Ha'gel is the last of an alien criminal caste. Afraid that Earth will learn the truth, the Companion's recruit the help of Beckett to deal with Ha'gel. Ha'gel assumes Sandoval's form, and confronts Beckett.

Zu'or sponsors a "fountain of youth" program, called Second Chances, which makes old and ailing people young again. The resistance are trying to replace Doors as leader. Pearl Bell says that she had no previous use for the Taelons before she undergoes the first public transformation. While being interviewed afterward she states how Taelons had before helped her son live. Resistance talks with Doors about the need to go underground again. At a press conference, a Resistance member challenges new transformation group, which provokes one of them to fire a gun into the crowd. The Resistance grabs Pearl, and find that her brain scan reveals memory alternations but they need to prove that they have become Taelon supporters.