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.

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.

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.