It was entertaining, I guess. It's not great (especially if like me you've watched the anime/read the manga) but I wouldn't say it's the worst adaptation ever. It just felt as if there was something off the whole time, like something wasn't right. Also, I'm more of murder cases than kidnapping so I guess that's another reason for me not enjoying it as much lol. I have to say though that I'm so glad they decided to go with Shinichi before he became Conan, otherwise it could've been horrible lol. I really liked having a AND THIS MIGHT BE A MINOR SPOILER OF THE END BUT NOT REALLY SINCE IT HAS NOTHING TO DO WITH THE ACTUAL PLOT OF THIS EPISODE sneak peek at the end of Ran and Shinichi as well as the detective kids. END OF POSSIBLE SPOILER.

Overall, I'd say that if you haven't watched the anime/read the manga you could give this a try and then go watch the anime/read the manga. If you have watched/read Detective Conan and don't know whether you should watch this or not... unless you love this series with a burning passion maybe you can skip it and watch something else since it has nothing to do with the actual plot.