Chakotay, Neelix, Kim, and the EMH (or, rather, the ECH) have to rescue the rest of the crew, who’ve been brainwashed by Ralph Malph into worker drones, and they get help from Dr. Sid Hammerback. The Star Trek: Voyager Rewatch does “Workforce” — Part I and Part II.
What I particularly like about this two-parter is especially true of this second half: it’s a good procedural storyline. I like how the solving of what’s going on unfolds. I particularly like that no one person is responsible for saving everyone—it’s a team effort. Tuvok’s resistance to the reconditioning and his mind-meld of Seven starts one ball rolling, and Chakotay stirring shit starts another ball rolling. Plus, his and Neelix’s “kidnapping” of Torres gets Yerid involved.
Yerid is an excellent character, and a character type I’m particularly fond of: the dogged workaday investigator who just wants to learn the truth. His insistence on finding out the truth even after he’s been relieved of duty is a very large part of why Voyager’s crew gets out of this, particularly since he is able to put Seven and Janeway together.