Banished and embarrassed by her former mentor Princess Celestia, Sunset Shimmer is forced to find other means to find the power she deserves. Beckoned by a golden light shining from one of Starswirl the Bearded's mirrors, Sunset leaves her old life behind and takes the plunge. Unlike the human world she expected, Sunset finds herself in the Lands Between, a land torn apart by a great war.

But this war comes with a boon - the seat of power and title of Elden Lord is up for the taking. Will Sunset Shimmer have the strength and power to claim that mantle, or will she fall prey to the corruption or blades of the others vying for the power of the Elden Ring?

A crossover between MLP and Elden Ring, obviously. Equestria Girls due to several characters from that spin-off planned to pop up in the world.