A phantom thief queen—whose age and gender are unknown—flies around the world on an airship in search of treasure. A gemstone the queen had their sights on is stolen from them by a mysterious circus troupe, and a game soon unfolds between the queen and the troupe's magicians, hypnotists, and other members wielding special abilities.
An original story based on the characters of Hayamine Kaoru's mystery novel of the same name. Naito Naito, a second year high school student who has the ability to survive in any situation, teams up with Ryuo Soya, a talented boy whose father is the head of the Ryuo Group conglomerate. The two of them and others challenge "Area Z", a game created by the genius creator only known as "Kurii Eita". Can they complete their mission to save the city within 6 hours?