National coverage of a gruesome double murder leaves Japan reeling in fear and suspicion. The killer is nowhere to be found -- until he begins traveling the country, swapping identities to stay one step ahead of the police. Now, everyone is a suspect: the mysterious young man dating a vulnerable daughter; the one-night lover picked up at the sauna; the drifter living alone on a remote island. Are these three enigmatic newcomers innocent, or are they connected to the crime and each other?