The Big Bang Theory spin-off’s finale just broke a storyline fans have known for 12 years

Well, this is a bizarre one. After a stellar run, the first season of Stuart Fails to Save the Universe wraps up with a finale that’s left fans—and sticklers for continuity—scratching their heads. It’s not unheard of for The Big Bang Theory universe to wobble a bit with details, but for a spin-off entirely centred on Stuart, you’d think they’d keep a closer eye on his own backstory. Instead, the writers have gone and created a rather glaring plot hole involving both Stuart and Denise, and I can’t get it out of my mind.

‘Spoiler: Filmed Before a Live Studio Audience’ tops the season, but manages to completely sidestep one of the most pivotal storylines for both the comic book shop and Stuart himself.

Comic Shop Amnesia

So, let’s recap what’s actually gone awry. In the finale, there’s a scene where Stuart tells Denise that the comic book shop never turned a profit—not once—except for the year it burned to the ground and he pocketed the insurance money. Amusing, if you ignore the fact he’s basically forgotten half his own past.

Go back to The Big Bang Theory Season 7 finale. That’s when the shop famously catches fire, leaving Stuart in the doldrums. At the time, everyone from his mother to the insurance investigator suspected he torched the place on purpose (subtle, that lot). But eventually, the insurance comes through—barely. As Raj points out in Season 8, the payout is meagre. It’s only after Howard’s mum steps in (classic Mrs Wolowitz) and stumps up the rest, that Stuart can actually afford to reopen the shop at all.

The real kicker: if he needed a top-up from Mrs Wolowitz because the insurance was so miserly, it’s a stretch to say the shop was ever “profitable” off the fire—he was essentially bailed out.

On top of that, there’s a knock-on effect with Denise. In The Big Bang Theory, she doesn’t turn up until much later (Season 11, Episode 21), after the relaunch, and Stuart only takes her on after the store finally becomes busy and he’s swamped. If, as the spin-off suggests, the shop never made a penny, how would Stuart afford to pay for extra staff? The maths does not add up, and neither does the logic.

Read more: No two-year wait: The Big Bang Theory spin-off’s second season is coming in 2027

Multiverse Mayhem?

Now, you could argue the show’s thrown in an apocalypse universe or split timelines—maybe “Stuart” here isn’t actual prime Stuart but some multiversal counterpart. With The Big Bang Theory’s own meddling with parallel realities cropping up, it’s plausible (just about). However, the series isn’t exactly rushing to clarify, and as it stands, it just looks like a classic case of the writers sweeping inconvenient details under the rug. Not that unusual in sitcom land, but you’d hope for a bit more rigour when the whole premise depends on these continuity threads.

The finale is still cracking fun—a proper send-off for season one, blending in more with its parent show than ever before. Somewhere down the line, we’re getting Stuart Fails to Save the Universe Season 2, so perhaps they’ll either paper over this odd mismatch or give us a clever meta explanation. Until then, it stands as one of the more distracting gaps in the Big Bang Theory saga.

Stuart Fails to Save the Universe has already been renewed for a second season.

• Stuart Fails to Save the Universe finale aired under the title ‘Spoiler: Filmed Before a Live Studio Audience’
• Stuart’s amnesia about the insurance payout forms a core inconsistency with The Big Bang Theory
• Denise’s hiring was originally linked to increased business, not insurance windfalls

Read more: After Penny, The Big Bang Theory spin-off hasn’t ruled out Sheldon, Leonard and Howard