Daidoji Shin, former louche layabout turned amateur investigator, and his long-suffering bodyguard, Kasami, are called away from the comforts of the City of the Rich Frog and into Unicorn lands to investigate a seemingly open-and-shut case of murder. But it's never that straightforward... A condemned woman's life is at stake, and the outcome may prevent a war between noble families. But that's only the beginning of this mystery: Shin will come face to face with a sinister seditionist organization that could have much deeper consequences than he could imagine.