The Nameless Monster, a mysterious children's picture book, holds the key to unlocking the secrets of Johan's past. The startling discovery that it was created by an official from the Czechoslovakian secret police leads Tenma to the ominously eerie Red Rose Mansion--an estate with a dark and tragic history covered up and sealed away for decades. Meanwhile, a serial murderer in Prague has been identified as a beautiful blond woman. Who could she be and what is her connection to Johan?