The journey begins when Professor Kaneda creates the ultimate soldier robot, Tetsujin, as a substitute for his son, Shotaro, whom he mistakenly believed died in a bomb raid on Tokyo during World War II. To prevent the army from using Tetsujin as a tool for destruction, the professor hides the robot on a remote island. Ten years after the war, Tetsujin is finally resurrected after 28 attempts made by the late Professor Kaneda's protege, Professor Shikishima. Meanwhile, Shotaro has grown up to become a genius boy detective and now joins forces with his beloved Tetsujin to wage a courageous battle against evil! A legendary masterpiece, which shines in the history of postwar manga, is now resurrected brilliantly!A failed experiment from the war years demonstrates an overwhelming power comparable to Tetsujin's, and Professor Shikishima is taken hostage! Professor Shikishima learns about the ill-fated man's past and a bittersweet story comes to light.As Shotaro and Chief Otsuka investigate this and other disturbances, one thing becomes clear: the sins of the past are beginning to come to light and like it or not, Post-war Japan will have to face them head on or risk being plunged into darkness once again.