Multiverse Theory

Multiple parallel universes coexist, each representing different outcomes or realities, sometimes intersecting with one another.
Star Trek
05/08/2009
A vengeful Romulan alters the timeline, forcing a young crew of the Enterprise to navigate a new reality while confronting the concepts of fate and destiny.
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The Avengers attempt to reverse a universe-altering catastrophe by traveling through time, encountering alternate versions of themselves, and creating new timelines along the way.
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