This is based on an art book, and I'm not sure to what extent the stories in the series are actually inspired by the pictures in the book, and to what extent they're just made up. It's also something I'm tempted to call an anthology series, but I won't. The episodes are mostly self-contained stories that just happen to take place in the same town, Mercer, Ohio. (The book itself was set in Sweden.) But there are plot threads that run throughout the series and get somewhat tangled up. I'm not really sure what to say about the plot, except that the title refers to an underground facility where there's a particle accelerator, but it seems like there's a lot more types of science and invention going on in Mercer. There are stories involving time travel, and body-swapping, and stopping time, and a parallel universe, and robots, and... other stuff. And parts of some stories are set in different eras of the late 20th century, so it's hard to be sure of when the show's "present" actually is. I also don't know what to say about any of the characters. I really don't want to spoil anything, but I will say it's as much a character-driven series as it is technology-driven. (I also gotta say it's ridiculous how much dangerous tech is just lying around where anyone could stumble onto it and use it without any idea what they're doing.)
Anyway... I wanted to like the series more than I did. It's just so slow-paced that it was hard for me to stay as interested as I could have been in any of the stories. (I blame my attention deficit and executive dysfunction, which have been making it painfully difficult for me to enjoy anything, these days.) Maybe if my head were in a better place I would have liked the series more, but it never would have been one of my favorites. Still, I'm glad to have watched it. And I definitely think the whole is greater than the sum of its parts.