It is just a few weeks until an utmost important event is about to take place in Canterlot, and everyone in the castle is doing their hardest work in order to prepare it to perfection. Then, Celestia receives a warning that could not come at a worse time. A group of ponies with motives that are all about upsetting the order in the wonderful city have appeared. Who they are is a mystery, but Celestia has gathered those she finds trustworthy in order to make sure this group, this Group Misery, won't achieve their goal. Their goal of finding out everything there is about Celestia's oldest secret.