The Stallion has no memory of who he is, or where he is from. As he struggles to adapt, Princess Luna begins looking into strange events that seem to point to the stallion… and she's not the only one interested in him. A shadowy institute and its agents have begun to make their move, ready to bring about an age of darkness and fear that the nation has never known.

Luna and the Stallion must move fast, gather new allies, and figure out what is going on in the city of Vanhoover before it is too late.