After residing in the conceptual realm for months, HBO Max has now given the go-ahead to the aptly named “Stuart Fails To Save The Universe.” This series is set to explore a science fiction-themed narrative that is unprecedented in the “Big Bang Theory” franchise. Much like the comics adored by Sheldon (Jim Parsons) and Leonard (Johnny Galecki), Stuart Bloom (Kevin Sussman), the comic book store proprietor, is about to navigate the multiverse in an adventure that potentially spells significant upheaval for his familiar Pasadena.

The “TBBT” spinoff chronicles Stuart’s quest to restore balance across all known and unknown realities after accidentally triggering a multiversal disaster with an invention that Leonard and Sheldon were developing. Accompanied by his friends and colleagues — geologist Bert Kibbler (Brian Posehn), girlfriend and fellow employee Denise (Lauren Lapkus), and longtime foe and quantum physicist Barry Kripke (John Ross Bowie) — Stuart endeavors to amend his misstep, encountering alternate versions of his acquaintances from different time continuums along the way.

This premise offers enticing opportunities for numerous former “Big Bang Theory” stars to make guest appearances, though no additional cast details have been disclosed yet. The series is anticipated to feature extensive worldbuilding and intricate science fiction mythology, marking it as a significant and novel shift from the narrative paths previously explored in the “Big Bang Theory” saga.

While “The Big Bang Theory” occasionally indulged in flights of fancy, it never strayed far from its workaday sitcom roots. Prequel shows “Young Sheldon” and “Georgie and Mandy’s First Marriage” are even more deeply rooted in the real world, taking a look at working class lives in Texas in the 1980s and ’90s. “Stuart Fails to Save the Universe,” on the other hand, is expected to heavily incorporate sci-fi and fantasy elements into the sitcom format, which will require a much greater use of visual effects and CGI. And since “The Big Bang Theory” could be surprisingly scientifically accurate, that puts the new show in an interesting place.

This, however, appears to be the kind of change that executive producer and series creator Chuck Lorre — who is writing the show with “TBBT” co-creator Bill Prady and comic book movie scribe Zak Penn — was looking for. 

“I wanted to do something radical that would take me out of my comfort zone. Something the characters on ‘The Big Bang Theory,’ would have loved, hated and argued about,” Lorre stated in a press release (via The Wrap). Prady added, “Putting characters we loved from ‘The Big Bang Theory’ into a complex science fiction story with the kind of mythology that those characters love while maintaining the comedic elements is incredibly satisfying.” Fans will have to wait a while to see if they’re satisfied by the show, too: There’s no airdate announced yet for “Stuart Fails to Save the Universe.”