Conan, Ran and Sonoko are at the skating rink and Sonoko talks about her relationship with Makoto, which reminds Ran of her own with Shinichi. A clumsy skater named Chihiro Itami collides with Conan, and her friends rush up to check if everything is all right. They're all part of the same ball-trap club, and recently a friend of them called Narita committed suicide, he was dating Chihiro. Before the firework, Chihiro says she'll go to the bathroom. Sonoko goes there as well and, after noticing a strange person rushing out of there, finds the corpse of Chihiro, shot dead in her cabin.
