In this short, Sunset Shimmer invites Fluttershy to a karaoke party with their friends, but Fluttershy declines, nervous about singing in public. When Sunset leaves and Fluttershy goes inside the animal shelter, she starts singing the title song, perfectly comfortable singing when she's alone with her animals. 

At the end of the song, Sunset returns and informs Fluttershy that she and the other girls decided to go see a movie instead. When she asks if Fluttershy was just playing music, Fluttershy quickly denies it and accepts Sunset's invitation to the movies.