It's now or never for the Defiant crew if they are to survive the parasitic infestation on the isolated Section 31 outpost Starbase 99. But with B'Elanna still connected to both Borg ally Hugh and the parasite hivemind, Nymira nowhere to be found, and a giant portal connecting their reality to a horde of hellish bugs just itching to burrow into each of their brain stems, things are looking dire at best. The third arc of the critically acclaimed series ends here!