Miyuki Unica Athena Yamanaka , is the grandaughter of a great well-known detective Odin Zeus Yamanaka.. Her parents were murdered when she was just 2 years old .. Even her grand father can't solve the case of her parents' murder because of frustration and disappointment her grandfather quit the job on being a detective and just focus on living a peaceful life with her .. Now she is already a third year highschool student when she encountered the Magician of hell who thinks crime and murder is an art. Can she unravel all the mysteries ? Will she be able to know who killed her parents ? Well let's find out ..!