Segawa (Masahiro Motoki) works at an advertising agency. His job is busy and he comes home late every day, so he rarely has time to see his girlfriend, Naoko (Miwako Fujitani). One day, when Segawa comes home, he finds a recording of a woman moaning on his answering machine. The next day, Segawa witnesses a woman lying in a pool of blood in front of a public telephone booth under a nearby overpass.