Unbeknownst to all of Equestria, Doctor Whooves secretly works undercover for the Canterlot Royals, assigned with the job of combating any situation that could cause public outcry across Equestria. With the help of his trusted personal gardener Carrot Top, Whooves solves the biggest crimes in the most unusual ways!

Following an attempted robbery, Doctor Whooves is assigned to accompany a bullion train on its way to Canterlot. But it seems the bandits plan to strike again, and this time it looks like they might just succeed...