Case Closed, Vol. 85: Checkmate

Can Detective Conan crack the case...while trapped in a kid's body?

When ace high school detective Jimmy Kudo is fed a mysterious substance by a pair of nefarious men in black--poof! He is physically transformed into a first grader. Until Jimmy can find a cure for his miniature malady, he takes on the pseudonym Conan Edogawa and continues to solve all the cases that come his way.

Checkmate

One of Conan's most closely guarded secrets is about to be exposed! As both the FBI and the Men in Black race toward the truth, the conflict comes down to a confrontation between two mystery men: Amuro, the Man in Black code-named Bourbon, and Subaru, the mild-mannered college student with surprising deduction skills.

Then Officer Yumi is kidnapped by a criminal who leaves a trail of clues encoded in shogi pieces. Conan and shogi champ Shukichi have to develop a winning stratagem to save her before time runs out in their deadly match!