When the Plunder Vine outbreak finally seized thanks to The mane 6s sacrifice to give up their elements, Equestria once again was safe, or so they thought. When Twilight saved the tree from becoming drained, a amount of magic was drained from her to the point of Temporary hospitalization.
When rumors of a Doppelganger Twilight Sparkle was spot running around using magic to spawn Plundervines and to vanish. Twilight is tasked to try to reason with this pony who goes by Twivine Sparkle, Unbeknown to Twilight something dark lingers in the background, and Twivine desire for power seems to match this source.
Will Twivine follow the path of Light and go on the side of Friendship, or will Twivine become a bigger threat to the Nation?
Twivine Sparkle belongs to DashieMLPFIM, aka, Delta Brony, all credit of her creation goes to him