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. In this exciting volume: The Junior Detective League takes action! While playing hide and seek, first-grader Amy discovers a chopped-off head. Will Conan and friends be able to save Amy from a serial murderer? And when Richard Moore attends a reunion of his college friends, one of them ends up with a bullet hole to her temple and a gun in her hand. Was it suicide or murder?! Later, Conan, Richard, and Rachel attend the birthday party of the daughter of a wealthy financier. But Conan's deductive skills are put to the test when the birthday girl ends up missing and someone turns up dead.