Resistance is futile! Cornered by their own parasitically possessed crewmate, Worf and the Defiant crew scramble for a way to safely save her before it's too late. But the hive is eager to grow its numbers, seeking total dominance over a galactic level of organic species after already claiming Starbase 99's crew as hosts. Trapped and unable to call Starfleet for assistance, Hugh suggests taking drastic measures—assimilate B'Elanna to Borg tech!