Hirai Taro and Shirai Saburo take up the case of the murdered art dealer Megurido, striving to uncover the true culprit. As Taro searches for clues, he becomes enraptured by the beauty of Ohyaku, a renowned dancer whom Megurido was once a patron of. Meanwhile, Mimako begins to cozy up to Vice Minister Gokuda, who has recently become Ohyaku's patron. It is at this critical juncture that Taro's pen pal, Ryuko, arrives in Tokyo. (Source: nhk.or.jp)