Things have been going fine every since Twilight became a princess and Equestria was saved once again, but while everyone's been happy after saving they're home, something's strange has been happening with Spike.
Spike's been having strange visions as of lately, he's been finding himself facing against strange monsters of darkness, and has been traveling far from Equestria, like.. he doesn't know if they're real.. or not. But one day after Spike has another strange dream, Spike is attacked by creatures of darkness in the forest when he's alone, but before he could be harmed, two strange weapons appear in his hands, something that gives him incredible strength.

Not too long after he defeats them, he finds a strange portal that has appeared in the forest, despite his worry's about all that he's been thinking about, Spike's curiosity gets to him, and he not only walks through it, but vanishes from Equestria entirely. When Spike awakens, he finds himself in another world called Travers Town, and he soon meets a young boy named Sora who's lost his home and his friends have gone missing. They soon meet two other people named Donald and Goofy, with they're weapons in hand, they all team up to find Donald and Goofy's missing king, stop these creatures called Heartless from spreading, and hopefully find a way for Spike to return home.