Trixie has just been defeated for a second and probably the last time by Twilight Sparkle. Athough she apologized already for her foul actions and in order to put everypony's minds at ease, Twilight decides there's just one last thing that is required of Trixie.

She must sign a legal document proving to not only Twilight, but to everypony in all of Equestria that she's going to take friendship much more seriously going forward.

Takes place directly after the events of Magic Duel, Season 3: Episode 5.