When Twilight Sparkle's inventions are stolen, Sunset Shimmer and the Rainbooms try to track down the new master criminal in Canterlot. There's hacking, silly robots, social engineering, magical combat, and Twilight Sparkle getting annoyed about capital letters.
Not exactly a comedy, but a light-hearted action adventure story. Written for FOME's latest contest. Edited the day after publication to split into 5 chapters and apply a few images in chapter 4.
Cover art composited from this and this. Prereading by my lovely wife!