Case Closed: A Challenge from Agasa! Agasa vs. Conan and the Detective Boys

The whole gang gets invited to Inspecter Shiratori's villa, where he keeps his wine collection, to celebrate the completion of it.

Conan borrows a large amount of manga from Mitsuhiko and crazy things begin to happen around Beika City. Things aren't always the way they appear to be. A family asks Kogoro to help them protect a special sword in their dojo since Kaitou KID has sent word he's going to steal it. However Kaitou KID will have to steal the sword while Conan and Yaiba are after him.

This OVA takes place ten years in the future and chronicles the possible events if Conan Edogawa and Ai Haibara do not take the antidote to APTX 4869 and grow up alongside their friends Genta, Mitsuhiko, and Ayumi, while still maintaining their detective endeavors.

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 stolen. But they are not the only ones who are after the jewel. The notorious master thief Kaitou Kid has taken an interest in this piece, which is worth 100,000 Yen, as well and now it's up to Heiji and Conan to be the first to find the culprit and acquire the jewel.