A miraculous story about saving the world with the power of "stones"! A mysterious power resides in the crystal possessed by Akira Amachi, a boy who is knowledgeable about stones. Using that power, Akira decides to solve various cases! The first episode is about a train derailment!? A train traveling at breakneck speed heads towards the collapsed railway bridge... Will Akira be able to save the people on the train?? Akira's miraculous story begins now!!! (Source: Shogakukan, translated)