世紀の大怪盗ジゴマが世間を騒がせていた。刑事を父に持つ辻タカシは同じクラスのトシカズ、ノボル、ゲンタ、カオリとともに探偵団を結成する。彼らにとっての心の拠り所は、いつも相談に乗ってくれる自称・推理作家の「シャーロックおじさん」。タカシたちはおじさんに「ジゴマに会う方法」についてのアドバイスを求めた。
The greatest thief of the century, Zigomar, is causing a stir in the world. Takashi Tsuji, whose father is a detective, forms a detective squad with his classmates Toshikazu, Noboru, Genta, and Kaori. For them, the one person they can turn to for advice is "Uncle Sherlock," a self-proclaimed mystery writer. Takashi and his friends ask him for advice on how to meet Zigomar.
