Starlight Glimmer and Trixie Lulamoon ebark on an epic quest to circumnavigate the world in fewer than eighty days. In doing so, they will learn much about eachother... and about themselves.

Here, on Earth, the lives of five teenage girls are spiralling downward due to forces beyond their control. Half a multiverse away, Discord asks Twilight for a favor. All of their lives will be changed forever.

The Cutie Mark Crusaders take their first steps towards adulthood, with calamitous results.