When Molly finally comes face-to-face with her offspring, she realizes she may be the only one who can stop the coming danger. Meanwhile, Julie uncovers grave secrets about Odin.

Molly returns to space in an attempt redirect the Seraphim away from Earth and protect the world’s population from the deadly spores. Also, John discovers that Odin's plan has put Ethan in terrible danger.

Six months after her life unraveled and dark secrets were revealed, Molly is confined to a psychiatric hospital when she learns of bizarre deaths that sound eerily similar to those she witnessed in space. When she escapes to investigate, she crosses paths with JD Richter, a determined cop who just signed on to the case.

Molly finally learns the frightening truth about what happened to her son. Also, Julie’s decision to erase Ethan’s memory has disturbing consequences.