This drama is adapted from the manga of the same name. It tells the story of Oda Teruoma, whose mother died unexpectedly when he was a child. He lives with his father, who runs the Oda Group, one of Japan's leading general trading companies. However, his father entrusts him with an old key called the “Devil's Key”.Shortly after giving the photo, he was killed by a mysterious man in front of his eyes.In order to explore the secret of “Devil's Key” related to the truth about his father's death, Teruomao wandered around the world. However, one after another mysterious property transfer incidents occurred, so he returned to Japan.Then, a character aiming at the “Devil Key” appears in front of Teruocha, and he must challenge “ACMA:GAME”...