In 2018, after Wade Wilson uses Cable’s time-travel device to prevent the death of his girlfriend Vanessa,[a] he travels from his universe, Earth-10005,[b] to Earth-616 on the “Sacred Timeline”,[c] hoping to join the Avengers and give his life added meaning. He is rejected by Happy Hogan and returns to his universe. Six years later, Wade has broken up with Vanessa, retired from being the masked mercenary Deadpool, and works as a used-car salesman with his friend and former X-Force member, Peter Wisdom.
During Wade’s birthday party, the Time Variance Authority captures him and brings him to Paradox, who explains that they are an organization outside of time that monitors the Sacred Timeline and wider multiverse, and offers him an important role on Earth-616. Wade initially accepts, however Paradox then reveals that Wade’s timeline is deteriorating as a result of the death of its stabilizing “anchor being”, Logan, while protecting his daughter Laura.[d] Paradox plans to use a “Time Ripper” device to accelerate this process, so Wade steals his TemPad and uses it to travel to Logan’s grave, hoping to resurrect him and save their timeline. When this fails, Wade travels the multiverse searching for a replacement alternate universe “variant” of Logan.
Wade returns to the TVA with a Logan variant but is told by Paradox that an anchor being cannot be replaced, and that this variant is considered “the worst Wolverine” in the multiverse. When Wade deduces that Paradox is acting without the knowledge of his superiors, Paradox sends Wade and Logan to the Void where all things are consumed by the creature Alioth. Logan agrees to work with Wade when he claims that the TVA can change his timeline. Wade and Logan are captured alongside Johnny Storm and taken to Cassandra Nova, the powerful and sadistic twin sister of X-Men leader Charles Xavier. Cassandra, who made a deal with the TVA to oversee the Void, kills Johnny and leaves Wade and Logan to be consumed by Alioth, but the pair manage to escape.
Logan and Wade meet a Deadpool variant called “Nicepool” who directs them towards a resistance group that have been fighting Cassandra. On the way, Logan realizes that Wade is bluffing about the TVA being able to fix his timeline, and the pair fight until both are left unconscious. They are found by the resistance group, consisting of Laura, Elektra, Blade, and Gambit. Wade proposes an alliance to fight Cassandra, and Laura convinces Logan, distraught over his reluctance that led to the death of his fellow X-Men, to join the cause. The resistance members distract Cassandra’s henchmen while Wade and Logan block her powers by placing Juggernaut’s helmet on her head. Cassandra is betrayed by her follower Pyro on behalf of Paradox, and almost dies until Logan convinces Wade to remove the helmet. Cassandra heals herself and opens a portal to Earth-10005, which Logan and Wade jump through.
Cassandra learns about Paradox’s plan from Pyro, kills him, and follows Logan and Wade to Earth-10005. She learns about the Time Ripper’s completion and how to use it from Paradox’s mind and plans to destroy all timelines, leaving only the Void. Cassandra summons an army of Deadpool variants, who kill “Nicepool” and battle Wade and Logan until Peter arrives and distracts them. Paradox tells Wade and Logan that one of them could destroy the Time Ripper by disrupting its power flow, but this would kill them, even with their powers. Both Wade and Logan destroy the Time Ripper together, killing Cassandra in the process, and are able to survive by sharing the burden. Paradox is arrested by the TVA’s Hunter B-15, who congratulates Wade and Logan and says their actions have stopped Earth-10005 from deteriorating. Wade asks Hunter B-15 to save the resistance group from the Void and change the history of Logan’s world. She explains that the latter is not possible because Logan’s history is what led to him being a hero now, and allows Logan to stay in Wade’s world. Wade invites Logan to meet his friends, and with encouragement from Logan, reconciles with Vanessa.
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