The detectives of Milky Holmes traded their mystery-solving for idol management, and the show knows exactly how absurd that is. Comedy runs on the collision between their genuine incompetence and their unshakeable confidence. When someone starts stealing idol songs, these washouts become the only people desperate enough to actually care about solving it.
The idol industry dominates Yokohama now that the legendary age of superhuman detectives has faded into memory. When someone begins systematically stealing songs from the city's biggest performers, the spotlight shifts to Marine Amagi, a megastar whose latest hit vanishes overnight. Desperate to recover her stolen track, Marine turns to Milky Holmes: four former detectives struggling to stay relevant in a world that no longer needs their particular brand of heroics. These washed-up investigators must dust off their detective skills and navigate the glittering, cutthroat world of pop music to catch a mysterious thief. What started as a simple recovery mission becomes something bigger, forcing the group to confront their past failures while discovering whether they still have what it takes to solve cases. The mystery deepens with each stolen song, revealing there's far more at stake than just recovering hits. Comedy erupts as these out-of-place detectives fumble through idol culture, creating chaos wherever they turn while genuinely trying to save the day.