Imagine a world where coal is the only fuel source and steam technology is highly advanced; in this world lies a fog-covered city known as Steam City. And under the cover of the mist, evil people use megamatons – steam-powered robots – to wreak havoc on the townspeople. Narutaki, a teenage detective with a brilliant mind, is the only person who can put a stop to these villains. With the aid of the nurse Ling Ling and the megamaton Goriki, Narutaki will stop at nothing to guarantee the safety of Steam City and all of its inhabitants!
Shinichi Kudo is a famous teenage detective who follows in the footsteps of his favorite hero, Sherlock Holmes, solving difficult cases with ease. One day, while investigating suspicious activity during one of his cases, he was captured and forced to try a deadly experimental drug which ended up being less than fatal, shrinking his body to the age of seven. To cope with the new appearance, he took on a new name, Conan Edogawa. Can he, with his new alias and help of friends and family, capture the culprit?
If you liked Steam Detectives you'd love Detective Conan because they are really the same kind of a show and have a very similar story. Though, I think Detective Conan is way better than Steam Detectives.
The mystery of "The Blade Children" is a secret which has remained well-hidden, and has cost some their lives. After Narumi Ayumu's brother disappears in a search for the answer, Narumi is forced to unravel this mystery for himself. Join him in his investigation which will lead him to the secrets of the Blade Children, and to tests of skill which may prove to be fatal.
If you liked Steam Detectives then you will also like Spiral because they are similar and both tries to solve a big mystery. The main characters are teenagers and both series have a girl who helps the detective.