When astrophysicists detect a transmission from another galaxy, it is definitive proof of intelligent extra-terrestrial life. The world's population waits for further contact with baited breath. They …

After the devastating alien attack, disparate pockets of survivors emerge into a shattered world. They quickly realise they must put their differences aside if they are to stand any chance of survival…

As the dust settles on their brave new world, the survivors are forced to face some cold truths. Catherine is stunned to discover the part she played in bringing about the alien attack. Helen becomes …

The survivors make some disarming discoveries not only about the aliens but also about themselves. Mokrani goes on the offensive, taking the fight to the aliens. Ash is forced to make the hardest deci…

Cracks start to show as the survivors find different ways to cope. Jonathan’s increasingly perturbed by Sacha’s strange behaviour. Emily proves to be an exciting conundrum for Bill. And Mokrani is hor…

The alien’s connection to certain survivors raises difficult questions. Bill makes a startling discovery. Sacha’s behaviour is increasingly erratic. And Tom’s birthday proves cause for celebration. Bu…

Tragedy strikes, altering the course of the future forever. Catherine’s priorities change with the arrival of Sophia. Things come to a head between Jonathan and Sacha. And Emily’s so happy she can see…

The survivors attempt to turn the tables on their aggressors once and for all. Mokrani and Catherine prepare for the fight of their lives. Emily seeks answers, at any cost. And Sacha’s visions continu…

Six months after Emily disappeared on an alien ship, the London survivors have set up a resistance base from which they plan to fight back; the aliens have since appeared and they look exactly like hu…

As Emily grows concerned by her recollections of time spent with the aliens, Bill is also perturbed by the similarities between Emily and the aliens; Zoe encourages a reluctant Bill to use these simil…

Bill secretly injects Emily with a biological weapon he hopes to use on the aliens; when she becomes sick, some of the survivors head out to find insulin in order to treat her; the resistance base is …

Catherine, Sophia and Nathan make their way to London, accompanied by Victor, a survivor encountered by chance. Along the way, the dangers multiply. Sacha's feelings towards Emily intensify and the yo…

Bill joins the military group formed by Ethan, Dominic and Michael. The three men hold a young alien hostage, Isla. Catherine, Sophia and Nathan continue to search for Bill. Adina, and the aliens also…

At the university, Sophia watches the videos recorded by Dylan, a young man they found dead, while Catherine focuses on the algorithms he left behind and which decipher the behavior of robots. Thanks …

Emily agrees to help Bill test her for the virus, but soon experiences serious side effects. Sacha, who has secretly followed the group to stay close to Emily, tries to remove her from the group. For …

Catherine, Sophia, Zoe and the other survivors, finally reunited, prepare for the ultimate attack. But it is Bill who is the only one to hold the fate of humanity in his hands, provided he is helped b…

After saving humanity, Bill Ward finds himself locked up in prison. Bitter, he will take a close interest in a new subject: many people around the world are victims of mysterious visions, including MI…

Astronauts Juliet Arquette and Richard Gallagher witness Catherine's theories in space as Adina plots revenge against humanity. Mourning over the death of her sister, Catherine decides to research the…

Richard discovers new data on the global phenomenon. Catherine must take a risk to continue her research, but is she ready to do it? Meanwhile, a new revelation tests Martha's loyalty, and Zoe is forc…

Betrayed, Tom forges an unexpected alliance with Zoe. Confronted with the teenager, Bill must again answer for the consequences of his sacrifice. Zoe takes a drastic step to stop Adina's plan. From th…

Martha unwittingly unleashes a fatal gunfight resulting in severe damage. In the alternate world, Catherine and Sam arrive at their destination, but encounter some unforeseen events. Bill then tries t…

Bill investigates more of Catherine's findings and thwarts the aliens' deadly plans, but the group finds themselves in danger once again. Meanwhile, a run-in with the aliens ends tragically. Catherine…

Catherine shares vital information about the black hole with Richard. Martha discovers Adina's destructive plan which the resistance group confronts. With little time left, the group is forced to take…

Helpless against Adina's plan, Bill has no choice but to make a risky bet while his comrades prepare for a brutal end. In space, Richard and Juliet realize how close humanity is to annihilation, but w…