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 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.
After the events with the giant nobles, the growth spell, now having gone wild, targets another pony: Big Macintosh, who is feeling a little down in the dumps. Let's see how he feels when he becomes the largest thing alive in Equestria!