Fics like Back to the Future Rules Apply

In the original timeline, Loki never pulled a knife on Thanos. In the original timeline, Stephen stopped at 5,371 futures, and Thor went for the head. In the original timeline, Thanos lost. The universe cannot survive without the Infinity Stones. As the last living Stone keeper, Stephen is called to undo what Thanos did. Racing through time and space, Stephen must find a way to save the universe. Tony must find a way to save Stephen.

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