The highly anticipated The Big Bang Theory spin-off, Stuart Fails to Save the Universe, is set to premiere on HBO Max on Thursday, July 23, 2026.

Moving away from the everyday sitcom style of the original show, this new series takes a fun, science-fiction twist. The story follows comic book store owner Stuart Bloom, who accidentally breaks a powerful machine built by Sheldon and Leonard. This mistake unleashes a multiverse disaster, compelling Stuart to travel across strange alternate realities to fix the timeline.

Kevin Sussman returns to lead the show as Stuart. He is joined by fellow returning cast members Lauren Lapkus as his girlfriend Denise, Brian Posehn as the rock-loving geologist Bert, and John Ross Bowie as the physicist Barry Kripke.

Stuart Fails to Save the Universe will premiere on Thursday, July 23, 2026, on HBO Max. The first season consists of 10 episodes, with the premiere airing at 9:00 p.m. ET/PT. After the premiere, the remaining episodes will be released weekly every Thursday.

Viewers in different parts of the world can stream the premiere at the corresponding local times. Depending on your location, here is when you can to the series tune in across various global time zones:

Stuart Fails to Save the Universe is an original production coming directly from Warner Bros. Discovery, making HBO Max its exclusive streaming home. Since the series is an platform original, it will stream directly on the service in all territories where the platform is available.

For countries without direct access to the service, the sci-fi comedy will be distributed through regional partner networks that traditionally host premium HBO content. Here are all the options region-wise to stream the series in all major locations:

Stuart Fails to Save the Universe premieres July 23.