Based on the novel by Seicho Matsumoto, "Nami no Tou" tells the story of a dark love affair between the public prosecutor Takao Onogi (Kotaro Koizumi) and the mysterious woman Yoriko Yuki (Yumi Aso). Deeply drawn to each other from the moment they meet, their love grows rapidly. But Yuki is married to a corrupt politician, and when Onogi is assigned as part of a prosecution team investigating Yuki's husband, their relationship threatens to destroy their lives...