This is the immediate sequel to Tyro's Tail, beginning a few weeks after the previous story ends. It continues the series begun with Coming to Grips.

An ex-human known as Tyro has found his place in Equestria alongside the Elements of Harmony. He has already helped them (and by extension, Equestria) escape from a terrible fate, but the ponies' work is far from over. A new and terrible threat has emerged in Equestria, and it is once again up to a few unlikely heroes to stop it.