Three ponies appear over a new world, yet they can't seem to remember how or why. Twilight, Rainbow, and Cadence try to find out what makes this new world so different from their own.
A group of friends are on a vacation road trip to California. When they stop to rest, they figure out they took a wrong turn and found themselves somewhere in the middle of nowhere only to run into talking horses.
Lyra's spell to the human realm misfires while Princess Luna tries to stop her, dragging them both into the unknown. Meanwhile, Andrew tries to make things right with his brother and repair his relationship with his friends.
