Ever since Discord was returned to the stone, Celestia entrusted the Elements of Harmony to their respective Avatar. However, after Applejack receives a visitor one night, the Elements go missing. The Avatars turn to the Princess to help find the one that stole the Elements. A task they give to a young detective by the name of Silver Shield.

With nothing to go on, he has his work cut out for him. But the Princesses wouldn't have given him such an important task if they didn't think he could do it. Though, as he works to uncover this mystery, he begins to suspect that something isn't quite what it seems.

My Little Pony belongs to Hasbro and Lauren Faust
Credit for My Little Mages goes to Didj
You can find his work here: http://didj.deviantart.com/gallery/