Complete story — includes the ending
With JD's help, Molly analyzes her DNA and determines it has hybridized. She tells Ethan that she is sick, and will have to delay the custody transfer until after she is well. To save herself from the virus, which has been perfected, she steals her research from HomeSec and goes on the run with JD. She will need Ahdu's DNA as well, and she successfully contacts him using the encoded genetic signal. She and JD locate a small, isolated compound where the hybrids live, and she meets Ahdu's young daughter, Terra. Ahdu shows Molly the history of the alien species: they lived in peace on their planet until a virus threatened them with extinction and they sent out the spores to find a new host planet. They have built a memorial to the humans they inadvertently killed while reproducing, and have now evolved to not cause the deaths of human hosts. They want to coexist with humans, and Molly decides they should have that right. She plans to plead their case to Shepherd, over JD's objections. Ahdu believes Molly should be their new leader. Meanwhile, Lucy has begun to hunt hybrids using their brainwaves, as they have altered their body temperature to match that of humans. She detects Molly's anomalous biometrics but conceals the information. Anna orders Julie to activate a hundred more Humanichs, and they are given Lucy's experiences as a baseline. Ethan converts a toy into a surveillance drone, and Lucy declares that they are each building an army. Julie questions Anna about John's death, and she denies involvement; but soon thereafter Julie and Ethan plummet over 20 floors in the building's elevator, although it discharges them safely.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Extant (TV series). HTML formatting and reference markers removed. · Content license