When a member of GD's gigantic biosphere team goes missing, Jack is paired with Allison to investigate. As the first people to enter the biosphere in 11 years, they enter the world of artificial light, weather, and weirdos to search for Bob Knob, the man in charge of sustainable agriculture who loves planting his own seed into as many biospherian females as possible. Jack finds a lizardy Bob with devolving DNA, a strange condition that starts affecting the rest of the biosphere crew and, inevitably, Jack and Allison.
With some help from a hologram version Henry, Jack figures out that this has been caused by the biosphere's water being ionized thanks to Derek the biosphere manager, who works outside of the biosphere and has fallen in love with one of its inhabitants. When Bob made eyes at her, Derek decided to focus an artificial sunbeam in his direction, hoping it would make him sick enough to have to leave the biosphere. Unfortunately, since Bob worked in the garden, everyone else ate the plants that were fed by the ionized water and got sick, too. Fortunately, Zane figures out a way to cure the biospherians, to be administered via a giant gun that Stark brings into the biosphere with him, all the better to impress Allison with. It's easy to go into a disease-ridden biosphere when you know you have the cure, isn't it?
Jack shoots Bob just in time to save Allison, who then credits Stark for her rescue. The biosphere is also saved, and Eva Thorne is so impressed with Henry's performance that she somehow gets him a pardon and he returns to Eureka. Hooray!
And in the B-plot, Eva forces Jo to implement her cost-cutting plan of shutting down the Eureka museum (which, sadly, we never get to see) and making Café Diem actually charge its patrons. After she's charged twenty-five dollars for a cup of coffee, she changes her mind. But before you think she has a secret heart of gold, she keeps the museum closed -- all the better to check out their top-secret film strips of A-bomb tests while ominous music plays with.
We open in Café Diem, where Zoe is serving breakfast to her boyfriend, who then tries to get a kiss out of her. He is not successful in this effort, as Jack is sitting right there at the counter and, as town sheriff, nothing gets by his watchful eye. He demands more coffee from the waitress immediately before she can make lip-to-lip contact with Lucas. Well, what did they expect? They know Jack is overprotective and they know he's sitting right there watching their every move. It's like they're teasing him. Vincent walks up and makes Jack feel even worse by reminding him that Stark and Allison just got engaged. What a pal! Jack was already bummed out because he misses Henry. "It doesn't seem right without him around," Jack says. "It feels like the whole town's out of balance." With that, Zoe drops, like, fifty plates. Geddit? Balance? Either that's the theme of today's episode, or New Balance shoes is the new in-show sponsor. Or both!
Over at GD, Eva Thorne's new cost-cutting measures include a hiring freeze and laying off seventy-five employees. No one says it, but I'll bet Dr. Edison from last week was one of the bootees. Stark, Eva, and Allison march purposefully around the lab, and while Stark protests Eva firing some of his staff, he does not go so far in his objections as to volunteer cutting some of his own salary to save money and perhaps a job or two. Eva remorselessly tells him that she's all about making changes to both GD and the town at large, and reminds Stark and Allison that she's their boss "until [she's] successful" or her ulterior motives are revealed. "I hope you're still here to see me go," she cheerfully says to Allison and Stark, as if threatening people's jobs was funny.
With that, she opens the door to a new lab that houses the stupid antiperspirant product placement that's only going to get worse as the season rolls on. By episode ten, it's all they'll be talking about. Storylines will revolve around it and characters will apply deodorant non-stop throughout the episode. You just wait. Anyway, I'm not paid to recap commercials, so I won't, except to say that Zane has been appointed head of the product placement lab, which is very fitting. Eva says that "research needs commerce," which is why we have products like Viagra and still no cure for cancer. And then a man walks around the lab with his hand on fire for no reason. I'm going to take that to mean that Degree antiperspirant will cause you to spontaneously combust. Buyer beware!
Time for Henry's obligatory appearance! Jack visits him in jail. Neither man is in a particularly good mood. Henry says he's about to be moved to a super-max prison in Colorado, which is not good news. He asks Jack to tell him about the weather, since he doesn't get to see sunsets anymore. Before Jack can do that, he gets a 911 page from Allison and has to go. On his way out, he and Henry both share a look that says that this sucks and will only get suckier, no matter how much they both try to pretend it won't.