Throughout the years, Pinkie Pie and her friends never failed to prevent even the worst of disasters from happening to Equestria. Or so one would assume from the commonly accepted opinion. Truth is, every mare has her breaking point. And maybe the worst of disasters simply hasn't confronted them, just yet.

Shortly after the coronation of Equestria's newest princess, Twilight Sparkle, the nation is struck by something more fierce than anyone ever deemed possible. Bearing an element of harmony, Pinkie soon finds herself among those first called upon clarifying what happened. Going on a journey that challenges her very morals and opinions, she soon arrives at a point of realizing how her new role in life will change everything - including herself.