When Trixie meets Sweetie Belle on the side of the road, after a conversation, she agrees to take her on as a apprentice. After long training and a little help from Zecora, Sweetie Belle is a big hit. The audience loves her. Even Princess Celestia and Princess Luna come to see the amazing filly. Trixie is not too happy about the little filly's success, though.
I've read the title and though Trixie is working with Sweetie Belle, jealousy already taking root in the titles. I can see where this is going to go down hill.