Kudo Shinichi, who became the Prime Minister at the age of twenty-one, was admired by the cool singing girl Haibara Ai without realizing it. The person he really cared about was Mao Lilan, whom he had met once when he was a child. When Princess Qingzi fled, Lan went to Beijing to seek help from Shinichi and went to Cangzhou with her. During the process, the two developed a deep relationship. The escaped Princess Aoko met Kuroba Kaito, and sparks flew between the two in the quarrel... But in the darkness, a pair of eyes was watching them...