In the aftermath of the battle with his brother in Canterlot, Stormbringer heads back to Ponyville to wrap a few things up and say goodbye to his friends, hopefully before the darkness inside of him rises again. From there he travels to Manehattan to set up shop as a private investigator for hire. It doesn't take long for him to get his first case, tracking down a dangerous criminal. The investigation, though, leads to another revelation, that something big is building in Manehattan. It falls to Storm and his newfound ally to try to solve the mystery in a race to save Manehattan from the machinations of a new, dark, and dangerous enemy!

Stormbringer and his brother Stormbreaker make a trip to Canterlot to visit their dying father, and Stormbringer must confront the stallion who he feels ruined his life. However, while talking to his father, he realizes that the situation isn't quite what it seems, and finally discovers who the true enemy has been the whole time. The resulting confrontation reshapes part of Canterlot's garden park, and brings an emotional weight to Stormbringer's life that he was never prepared to deal with.