What happens when the Cutie Mark Crusaders see each other after several years?

One day, Spike woke up in a world filled with dragons. Uh-oh.

Discord finds out that he has a daughter from his one and only romance.

A strange voice appears in Twilight's head.

Steel doesn’t worry about a colt’s well-being. Railroad cars don’t have much concern for the bodies of ponies. But, despite the dangers, I wanted to be a railway pony. I wanted to be like Highball.

Celestia takes an afternoon off for fun.

Anypony wanders around Canterlot in search of a mare he can be a boyfriend to

Three phoenixes discuss their various memories, masters and experiences of each of their worlds.

A murder in the mirror world brings Sunset Shimmer back to Equestria, with her world's Twilight Sparkle in tow. While they track the killer, they struggle to reconcile the differences between them and their mirror counterparts.

Tornado Day approaches, and the most prideful pegasus in Ponyville has just been defeated by his own ego. Will he learn the most important lesson of being on a team in time to soar?