Rook Kazuki is a consulting detective from Chiba Prefecture who only takes cases that interests him or if it involves a large sum of money. Before becoming the detective that he is, he solves the gruesome death of Sari Mortensson, the daughter of a well known chess grandmaster in Sweden. Now that he is back in Chiba, he solves the complicated requests of his clients, together with his partner, Tatsumi Sakoshita.
