在一座因形状酷似月琴而得名的小岛上，居住着美丽的十八岁女孩大道寺智子（栗山千明 饰）。遵照母亲的遗言，她即将启程前往东京的养父大道寺欣造（石桥凌 饰）处居住。许多年前，智子的生父从悬崖跌落而死，而围绕这一事件更有多名男子丧命。在智子启程前夕，欣造收到一封匿名信，称智子和她的母亲一样，是具有克夫相的女王蜂，一旦将其接来势必造成更多人的死亡。智子美貌绝伦，宛如其母重生，而类似的悲剧也随之而来。刚好在欣造旅店度假的金田一耕助（稻垣吾郎 饰）和著名作家横沟正史（小日向文世 饰）亲历了这一连串的杀人事件……

本片根据横沟正史的同名推理小说改编。

The movie is part of the Kindaichi TV movie series. Kindaichi is played by actor Goro Inagaki. The character's grandfather began with the written word. Kousuke Kindaichi started life in the novels of Seishi Yokomizo, written and set in post-war Japan. Inspired by Arthur Conan Doyle and Agatha Christie, Kindaichi is still very much a unique character, giving the Japanese their very own literary hero-detective. Young Hajime Kindaichi is a young man with bad dandruff and worse dress-sense (decades before Columbo), who wears a trademark, scruffy sunhat. He also happens to be better than the police at deductive reasoning. Having gained publicity for solving a high-profile murder case, the detectives allow him to work with them again. This story is slimmer than the twisty plots of Inugami and Village, but is graced by the presence of Chiaki Kuriyama (Battle Royale, Kill Bill Vol. 1, The Great Yokai War) in the title role.

十九年前に起きた日下部仁志の事故死の真相を調べに、天城・月琴の里を訪れた金田一耕助は、そこで謎の連続殺人事件に巻き込まれる。大道寺家の娘・智子には遊佐三郎、赤根崎、そして心霊研究科の九十九龍馬という三人の求婚者がいたが、”智子に群がる男の命は脅かされるであろう。彼女は女王蜂である”という警告を裏付けるかのように、三人は次々と惨殺されてしまう。この一連の殺人事件は十九年前の事件に繋がると推理した金田一は、深い謎に迫っていくのだが……。