An androgynous alien species called the Taelons arrive on earth, claiming to be companions of humanity, putting an end to crime, illness, and famine. Some are suspicious of the Taleons, and form a resistance movement. The resistance soon learned that the force that sustains the Taelons are breaking down, and they are using humans as test subjects in experiments to help save their species. The initial focus of the show was Commander William Boone and his partner, Captain Lili Marquette, who worked for both the Taelons and the resistance. After Boone was killed, the show introduced a new protagonist, Major Liam Kincaid, and began to play on the strengths of it's ensemble cast.
Zo'or and Liam crash in a remote area of Wyoming. Naraina Durrant, a resident of a local commune of natural purists known as the Children of the Earth, rescues Liam from his crash bubble and assists him in his search for Zo'or. Meanwhile Zo'or's bitter rival T'than calles an emergency meeting to propose Da'an take Zo'or's place as the Synod leader.Watch Now:AmazoniTunes
Liam and Augur discover that Volunteers all over the world are breaking into homes and arresting civillians. Meanwhile, Sandoval genetically alters Lili and sends her off into space.
The Companions are invited to join with a religious order in a ceremony. The group is made up entirely of women and seeks that special spiritual connection with the Taelons that will bring them to an enlightened state. Liam finds a former resistance member, Elizabeth, in the group. During the ceremony, the Companions share their energy with The Cloister. Worried about the possible security leak, Liam and Renee have to stop Elizabeth from telling the cult everything.Watch Now:AmazoniTunes
While Lili returns to earth after being tricked into giving the jaridians interdimensional transportation, an auction is held at the Antartic Republic of Rostok for some mysterious alien weapons. Sandoval must stop the bidding taking place while Liam and Renee try to find out what the weapons are.
The Taelons' fate - and possibly Liam's - is decided after Liam and Renee find Ma'el's regeneration chamber. The discovery of the secret location causes the surviving Taelons and Jaridians to seek the mechanism, which promises to restore their draining energy. Street, meanwhile, solves the riddle of Ma'el which will allow the Taelons and the Jaridians to join.Watch Now:AmazoniTunes
President Thompson declares a state of emergency to crush the resistance while Liam and Auger try to prove that the resistance was not behind the assasination attempt of President Thompson.
Renee visits Boone and shows him a crystal that can project the location of every Atavan on Earth. In an effort to retrieve the crystal, Sandoval brings Zo'or back to life as an Atavus so that she can battle her old nemesis Boone.
This pivotal episode brings Renee Palmer to a hybrid-infested hospital where comatose patients are being used as a food source for the Atavus. It is only when Renee is ultimately able to expose these atrocities that the FBI finally takes seriously the threat of the Atavus, who must feed on the life force of humans in order to survive. The FBI pledges to join Renee's crusade to destroy this formidable alien menace before they take over the world.
Da'an hires a professional hit man to seek out Augur. Liam and Renee meet with 10 Resistance leaders whose cells have been discovered and destroyed. In order to avoid one cell from crushing the entire network in the future, Liam proposes that he be the only communication link between cells. Sandoval learns that he will die unless he gets a blood transfusion from an immediate family relative.Watch Now:AmazoniTunes
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.
Renee's personal image of mankind's greatest enemy is forever changed when she becomes emotionally involved with a young atavus child, Yulyn, whom reveals he has a very human-like soul. Renee must now protect Yulyn, also a royal, from Howlyn's evil clutches.
Lili is taken hostage as a Jaridian escapes from the Taelons in a shuttle. Liam pursues and both shuttles are drawn into a alien vessel. Liam explains that the vessel is a repository for the Kimera's accumulated knowledge. In order to leave, they must go to the vessel's core. Da'an confronts Zo'or about the Jaridian's escape, and challenges his authority. The Jaridian reveals his race and the Taelons were one until the Taelons separated. Now the Taelons want to force a union with the Jaridians by using humans as soldiers against them.
A probe crashs on earth. The Resistance finds the probe, before Sandoval arrives, and takes it to a hideout. The hideout is ambushed and they are taken to a 'Dark Knight' base. The Resistance deals with this unexpected new player as they try to stop a Jaridian probe from an assault on Earth. The probe takes the shape of Augur, and delivers a message to humanity.
Renee suffers an emotional breakdown after a high-rise attempt to rescue a woman and her baby from an atavus attack goes horribly wrong. Unable to shake the image of the crying baby falling to its death, Renee and Street check into a spa to try to relax. Her therapy is soon cut short as they find themselves being stalked by Howlyn.