Extant

Extinct

After Molly collapses and experiences a vision of her encounter on the Seraphim, Sam agrees to give her an ultrasound so she can learn more about her mysterious pregnancy. Also, Molly tracks down Kryger and he reveals the disturbing details of his own solo mission that the International Space Exploration Agency (ISEA) is keeping secret.

Wish You Were Here

Molly has to decide if she is going to reveal her pregnancy to John after he confronts her about her distant behavior. Meanwhile, John and Molly face parents who are suspicious of Ethan when he goes to school for the first time.

Shelter

After Sparks attempts to quarantine Molly, she and her family seek refuge on a remote island with her estranged father, Quinn. When the agency closes in on their whereabouts, Ethan is exposed to grave danger. Meanwhile, Yasumoto experiments with a strange and deadly substance.

What on Earth Is Wrong?

John begins to doubt Molly's mental state when the validity of her pregnancy is questioned. Meanwhile, Ethan suffers a serious setback, and John and Julie disagree over how to care for him.

Nightmares

Molly uncovers top-secret footage that reveals the real reason the ISEA chose her for the solo space mission. Meanwhile, Ethan experiences his first dream, an unforeseen event for which he was not programmed; and Julie connects with a mysterious man she meets at a gym.