Celestia has a secret she doesn't want anypony to know, least of all her lover. Unfortunately for her, Rarity loves uncovering secrets.

In the face of anon-a-miss, Sunsets runs away to Equestria to get a break and finds a welcome relief in her old life as a pony. Cultures clash as her CHS friends, determined to win her back, discover just how little they know about Sunset.

Sometimes the girls at CHS forget Sunset is a pony, so when Rarity finds a rather odd bottle of shampoo in Sunset's bathroom, the confusion is understandable.

Thorax has taken on the role of leader of the changelings, but while Celestia promised they would leave the changeling kingdom to the changelings, the inexperienced Thorax finds he may need the help of his friends sooner than expected.