Starstruck never thought about the universe much. Quite ironic, considering he was an astronomer at RASA, the leading Equestrian institution for air and space technology. But when an unidentified extraterrestrial object appears in orbit around Equestria, Starstruck is forced to face the immensity of reality as he and his friends are thrust into a world they never could have imagine. Alongside heroes from worlds both mundane and impossible, he must race against godlike forces to save not just himself, but the whole of reality itself.
Note: this is a MASSIVE crossover, which will touch upon and cross over with multiple universes, both in the MLP world and outside of it. Because of this you should have at least a basic understanding of many TV shows, books, and games. If not, just go with the flow and enjoy the ride!