As always, Celestia tries to dominate her younger sister, expecting her to conform to her ideas of fun. Celestia turns out to be an adrenaline junkie while Luna wants to do mundane things.
It was a bit of a rehash of the episode where Starlight swapped their symbols. Just less threatening this time
There was a cute sister song and we found out Luna is a fan of the post office ("it's about the process!"). Celestia has to learn over and over again not to treat her sister as her lesser. Looks like these two should just live in separate castles already