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.

Step back in time and watch Jimmy Kudo solve a murder at an aquarium--and deduce that something is fishy with Rachel--in one of his greatest cases. Then the Junior Detective League flies a kite--straight into danger!

Meanwhile, Amuro, a.k.a. Bourbon, displays an uncanny talent for showing up exactly where Conan doesn't want him. The two match wits over a poisonous tea party, then go for extra credit by investigating the attempted murder of a schoolteacher. Conan suspects the dashing but deadly Man in Black isn't exactly what he seems...