Plot Universe

Universe in a fandom means the setting in which the whole plot takes place. These universes are called AUs means Alternate Universe. Example: A guardians of the Galaxy AU will take place in a galaxy or A Marvel's Universe AU will take place in Marvel's universe. Death Note AU would involve a character getting the power to kill people with a book! Many people who want to write original plot lines but want to have a setting in one of these universes, also write fan fictions. Other verses could be A/B/O verse which have alpha beta omega dynamics like werewolves have. This universe is the most popular in all time.