Based on the novel Ango Sakaguchi, anime tells the story of Yuki Shinjurou, a detective who solves the puzzle, along with his partner Inga strange. The Opening Theme is "How To Go" by School Food Punishment and the Ending Theme is "Fantasy" by LAMA.
The action of the story takes place in an alternate future in Japan, where the course of events after the Second World War is different. Yuki, a young detective, also called by all newspapers failed detective who gets involved in various cases linked to mystery and where he met president's daughter Rie. Accompanied by a strange boy named Inga, trying to solve the riddles around him.