One's a play-by-the-rules robotic cop and the other's an adrenaline addicted Rainbow Dash, together they fight crime!
Rainbow Dash doesn't need foalsitting, she's a good cop, but she does tend to be reckless when it comes to procedure, so The Chief assigned her a partner to make sure she doesn't blow anything up. He is a robot designed by Twilight Sparkle named Spark.
Rainbow Dash is determined to be awesome, and Spark just wants to do his job.
The financial adviser for Sparkle Industries was murdered, and the pair is sent to investigate. Is this just a deranged serial killer, or is there something more sinister going on?

Warning: Contains some gore and over-the-top action sequences starting on the second chapter, also has really soft social science fiction and pop cultural references.