In a parallel universe, there is an alternate of everybody. An alternate you, an alternate of your best friend, everybody. That is, if the alternate managed to stay alive.
Parallel universes can be different. One may be stuck back in the time of dinosaurs, and maybe no humans exist. One may be very advanced in technology or science. Maybe there's one that is ruled by robots, and there is no such thing as books.
Alternate people can be alike or different. It depends on the path they have chosen. Maybe your alternate reads fanfiction just like you, or maybe they won't even look at a computer.
Nobody knows what any of their alternates are like. Nobody knows what the alternate universes are like. You have to find a way into another universe to figure that out.
But what happens when two universes cross paths?
