Dash has been having grotesque dreams, depicting the events of the well-known "Cupcakes," for the past six months. She decides to spend the day getting to know her pink friend more thoroughly, in hopes that a better understanding of her friend will cause the awful dreams to subside. While the day doesn't go exactly as intended, it does trigger a chain of events that could change life in Equestria, no, the world, forever.
Perhaps it wasn't just about Pinkie. Perhaps it wasn't just about Dash, either. Perhaps it was never just about the Cupcakes.
Note: This is a new version of an older story! If you've already read this, I highly suggest you read it again, as the writing and plot have become much better since the first edition.