Meitantei Conan: Kieta Daiya wo Oe! Conan & Heiji vs Kid!

One day Mori Kogoro's private dective agency receives a blackmail call. It turns out that the caller has dialed the wrong number. Conan is able to identify the voice on the phone, it's similar to that of his old friend Heiji, who's also a high school detective but in Osaka. They join once again forces to solve the case and find the jewel which was...