Captain Rainbow Dash has a problem with one of the new Wonderbolt cadets. He's a changeling who's decided the best way to succeed at being a Wonderbolt is to be Rainbow Dash.
Sunny goes to the Changeling Dox to see if he wants to join her friends for Winter Wish day. She then shows him something he thought he lost a long time ago.
Ponies keep disappearing and turning up later unharmed and with no memory of what happened. In response, Hitch and Sunny stay up at night to find out who keeps doing this odd thing.
Queen Chrysalis wants to become the next Titan and conquer Equestria. but like all her plans it goes wrong. When she becomes huge, there will be big side effect, Chrysalis will become as kind and caring as the Princesses and set loose on Equestria!
Pharynx sets up a series of traps for Thorax to test him. Chrysalis tries to break into the hive again. And neither one of their plans are going to go right, much to their dismay.
A lone changling lives a day to day life of fear that the friends he's made will shun him away for what he really is, should they find out about him. But perhaps ponies are more accepting than what he once thought.
After Queen Chrysalis learns of a faraway island nation inhabited by harmonious changelings, she sends a diplomat to learn more about them, and to make them an offer.
A timid Thorax is in dire need of a way to boost his confidence as the new King of Changelings, so Luna decided to lend a helping hoof by making him feel like he's on top of the world. Literally.