A fanatical group of xenophobes attempt to rid Earth of all non-humans and end all extraterrestrial relations.
4-07: The Forge
After a terrorist attack on Vulcan kills Admiral Forest, an investigation leads Enterprise to believe that an secluded group called the Syrrannites is responsible.
4-11: Observer Effect
With Hoshi and Trip suffering from a fatal illness, Organians study the Enterprise crew.
Phlox is abducted by Klingons and forced to find a cure to a fast-spreading illness. Meanwhile, Section 31 reaches out to Reed.