The Lunar Base Ark explores ore and unexpectedly is hit by a meteor shower and has severe damages. Colonel Gerard Brauchman sends the crewwoman Ava Cameron to repair a wing that is full of CO2. Dr. Lance Krauss warns that the gas may cause paranoia and hallucinations. Ava brings a sample of the meteor for analysis and Dr. Krauss finds that there are spores attached to the meteor. Ava accidentally cuts her finger in a sample but she hides the cut from the doctor. Soon Ava gets pregnant and delivers an alien offspring. However, neither Col. Brauchman nor Dr. Kraus believes in her words and they believe that Ava is delusional. He offspring bites the crewman Bruce Johns and the crew discovers that Bruce has been cloned by the alien. Soon they find how dangerous the clone is.

The second season of Reign begins with Mary and Francis on the throne of a nation burning. France is rocked by the aftereffects of the plague, a disease that creeps inside the castle walls, taking thousands upon thousands of lives across the land, and ravages the stability of a nation. From the ashes, powerful lords will rise, carrying out personal, religious and political vendettas, taking lives, and tearing at Mary and Francis's commitment to each other, and their people. Friendships will be tested, loved ones murdered and betrayed. Meanwhile, a mysterious and deadly threat snatches victims from village streets and castle corridors; leaving evidence of savagery that looks like the work of monsters; mythical creatures who are the subject of nightmares, but who walk among us, doing the Devil's bidding.

Abby Russell, a beautiful, dedicated nurse with a sinister side, has a secret life in which she targets and punishes dishonest men.