Ayumi's genuine belief that real-life crimes are actually a PreCure crossover waiting to happen is the purest possible collision between a kid's magical girl delusion and Conan's grounded detective work. The Junior Detective League has to solve an actual jewelry heist while one of their own is basically speedrunning her own fan fiction in real time. It's a special that knows exactly what it's doing: comedy built on the gap between what Ayumi sees and what's actually happening, wrapped in a mystery that doesn't need the magical girl stuff to work, which makes the joke land harder.
Jewelry heists are sweeping the city, and while the police scramble to catch the culprits, Ayumi from the Junior Detective League sees something nobody else does: the robberies mirror her favorite magical girl show, Precure. Convinced that real-life PreCures will appear to stop the thieves, she lobbies hard to get Conan and the rest of their group stationed at Kaneko Jewelry Store, the suspected next target. What starts as routine stakeout duty quickly becomes complicated when the team identifies a suspicious customer and tracks the criminals to their hideout. The police make arrests, case closed. Except Ayumi spots inconsistencies that don't add up. Something about this setup feels wrong, and the real mystery isn't what it appeared to be on the surface. As the Detective League pieces together what actually happened, they're forced to reckon with a twist that blurs the line between Ayumi's magical girl fantasies and the real mystery unfolding around them.