Many heroes died and became legends in stories and history books. What if they have a second comeback? Thousands of ponies, dragons, diamond dogs, etc. are now reincarnated as humans. These reincarnated humans from all over the world magically appeared at the borders of all the major civilization. They will discover their history of their past lives and see the result of their work. Will they continue their legacy or will they tried to get back home in any mean necessary?
Equestria Girls doesn't exist in this universe. Take place after season 6.