A location switch at the end of The Umbrella Academy season 3 covertly prevents season 4 from retconning the time travel storyline. After months of pandemic-related delays, The Umbrella Academy returned with the Hargreeves siblings, fresh off of another time jump, going head-to-head with the Sparrows, Reginald Hargreeves' answer to the Umbrellas, while figuring out how to stop a newly-formed kugelblitz. After escaping yet another apocalypse, the Hargreeves find themselves in a strange new universe at the end of season 3.
The Hargreeves are no strangers to confronting the end of the world. In season 3, they face down the apocalypse from Reginald's Hotel Obsidian, which is a front for an interdimensional portal. The siblings cross through the portal into Hotel Oblivion to help their father restore the universe and fuel the hotel, which is an enormous reset machine. Before their bodies can be depleted, Umbrella Academy's Allison (Emmy Raver-Lampman) kills Reginald and presses the reset button. However, the Hargreeves do not emerge back into the hotel.
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Season 3 of The Umbrella Academy concludes with the team entering their new reality by way of Obsidian Memorial Park, which was donated by Reginald on October 1, 1989. The universe was indeed reset, albeit not to a timeline the team recognizes. Allison is reunited with daughter Claire, but she is also reunited with her husband Raymond, whom she married when she was stuck in the '60s. The rest of the Hargreeves no longer have their powers, the most notable being Five, who is unable to time travel. Introducing Obsidian Memorial Park may prevent time travel from dominating the plot in future seasons, as it does not link
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