Although The Big Bang Theory wrapped in 2019, its upcoming spinoff, Stuart Fails To Save The Universe, is poised to deliver a new angle on the franchise that could recontextualize all 12 seasons of established lore. While SFTSU centers on TBBT’s Stuart Bloom (Kevin Sussman), the show’s universe diverges from the original in several major ways. In this series, Stuart unintentionally fractures the fabric of reality, setting the stage for a sitcom built on a full-blown multiverse premise.
According to Warner Brothers Discovery, the new spinoff begins when Stuart damages a device engineered by Leonard Hofstadter (Johnny Galecki) and Sheldon Cooper (Jim Parsons) — a mishap that “accidentally [triggers] a multiverse Armageddon” he must somehow stop. Though the show will bring back familiar faces from The Big Bang Theory, it will also introduce alternate-universe renditions of beloved characters and iconic moments.
Creators Chuck Lorre and Bill Prady have both expressed enthusiasm for the show’s concept, calling it the type of idea the original TBBT characters would obsess over and debate endlessly. Still, many fans admit the multiverse twist is a lot to process. Scheduled to stream on HBO Max, the spinoff holds the potential to fundamentally disrupt — and possibly rewrite — 12 years of cherished TBBT continuity.
Stuart Fails To Save The Universe Pulls TBBT Straight Into a Multiverse
A Return to the Show’s Comic Book DNA
Though The Big Bang Theory ended years ago, Stuart Fails To Save The Universe promises a refreshing, comic-book-Inspired expansion of its world. While the spinoff still follows Stuart Bloom’s daily misadventures, the setting shifts dramatically. Stuart’s accidental break in reality launches the series into a humorous multiverse experience unlike anything the franchise has attempted before.
As Warner Brothers Discovery explains, Stuart’s mistake with Leonard and Sheldon’s invention creates a ripple event that brings about a multiverse catastrophe. As the chaos unfolds, the show revisits TBBT staples — but through alternate timelines and variant versions of the original cast.
Chuck Lorre and Bill Prady have voiced how excited they are for the creative opportunities this concept unlocks, noting that the multiverse framework offers something both the characters and fans would eagerly debate. Still, audiences are already grappling with just how far the spinoff might go in reshaping long-established lore.
A Multiverse Premise That Could Reshape TBBT’s History
A Bold Yet Risky Way to Revisit the Franchise
Kevin Sussman as Stuart Bloom (Credit: Everett Collection)
Even though TBBT fans seem generally open to the upcoming multiverse chaos, the creative gamble is undeniable. By throwing such a beloved franchise into a reality-bending setting, the show invites viewers — along with Stuart, his girlfriend Denise (Lauren Lapkus), and their circle — to explore alternate versions of events fans already hold dear.
While the multiverse setup offers a clever way to revisit The Big Bang Theory without launching a traditional revival, it also poses narrative challenges. The premise will likely lean into its comic-book roots — a natural fit given Stuart owns Sheldon and Leonard’s favorite comic shop — but appealing to longtime fans may prove difficult if the story drifts too far from the emotional heartbeat of the original show.
The Multiverse Twist Might Undermine Original TBBT Lore
The Spinoff Risks Feeling Too Chaotic for Some Fans
The cast of The Big Bang Theory eating together (CBS via MovieStillsDB)
Even though Stuart Fails To Save The Universe is clearly aimed at dedicated TBBT fans who already understand the show’s tone and lore, some viewers may still find the drastic reimagining unsettling. While Lorre and Prady will likely handle the franchise’s core material with care, the entire purpose of the spinoff is to push boundaries.
For certain fans, reframing major TBBT moments — or revisiting them in alternate timelines — could be fascinating. For others, watching new versions of Leonard, Sheldon, or Penny (Kaley Cuoco) might feel jarring or even off-putting. Ultimately, the multiverse’s inherent unpredictability may excite some viewers while driving others away from Stuart Fails To Save The Universe rather than pulling them deeper into the world of TBBT.
