Midori’s suicide at a young age drives her father mad. Mr. Nagara, a rich Japanese business man, cannot get over the loss of his daughter and seeks vengeance over her death. David, Midori’s boyfriend, a Catalan man who owns a wine shop in Tokyo, cannot forget her either. As a way of dealing with his grief, David begins a relationship with Ryu, a solitary and enigmatic girl that appears in his store and with whom he will take the same walks and undergo the same rituals as he had done with his previous girlfriend, until they both give into their desperate sexual passion. The witness and narrator of this peculiar love story is an engineer who has also fallen for Ryu and who is obsessed with recording the sounds that surround her in different places – from Tsujiki, the noisy fish market in Tokyo where she works the nightshift, to the cemeteries that she likes to visit on Sundays. And yet both David and the narrator are oblivious to the fact that Ryu has another occasional occupation: she is a hired killer.