Detective Conan vs. Wooo

Shin'ichi helps solve a murder on a balcony. After-wards Shin'ichi goes with his childhood friend, Ran to an amusement park. When someone is decapitated on a roller coaster, they're riding on, he solves the case quickly. As Shin'ichi and Ran are about to leave, Shin'ichi follows a suspicious man into an alley he is knocked out and give a poison by a man in black, the poison doesn't kill him but instead shrinks him to the size of a kid.

Shin'ichi tries to come to terms with his new size and convinces Hiroshi of who he is and assumes the identity of Conan Edogawa. He moves in with his girlfriend Ran and her father Kogorou. Conan helps to find a kidnapped daughter of a wealthy businessman.