The time to prepare for Winter is coming up. Everypony has a duty to fulfill whenever such seasons take place.

But this year, the weather teams find themselves in a dilemma. Ponyville's bird population has become so high, Equestria is unable to shelter them all for when they fly south. Without shelter, they'll not only freeze their feathers off, but also starve due to the lack of edible food for their kind.

Rainbow Dash knows that there is only one hope for their survival. They must fly farther south than they have ever flown before. They must fly across the open seas outside of Equestria, where banished ponies and unnatural magic take place. Rainbow Dash thought she would take it upon herself to search these foreign lands, until she noticed Fluttershy coming as well. Maybe she had her reasons, considering this was for the birds' sakes, but these were dangerous lands that no other pegasus in Equestria would dare cross.

As they work together to search outside of Equestria, they learn things about these unnatural lands, they were better off not knowing.