The Baltimare Police Department is home to both the Major Case Unit (MCU), comprising of the best detectives the city has to offer, and humans from the newly formed Earth-Eques Joint Operations Command (OPS-COM), making it one of the most reliable peacekeeping forces in all of Equestria.

However, all is not what it seems in their latest case involving a dead victim found during the Summer Sun Celebration. As more and more seemingly unrelated victims turn up, the team is pressured to get the perpetrator before he disappears off the grid.