Young married couple Yoon-hee and Jung-hyun go on a road trip, and along the way they pick up a lone drifter, M. M turns out to be a violent and sadistic psychopath who terrorises the couple at every turn. After capturing Jung-hyun, Em gives him a choice: submit to torture or allow Em to kill Yoon-hee.
as Em / M
as Yun-hie
as Jeong-hyun
as Manager
as Detective Ma
as Detective Kim
as Detective Han
as Cop
as Young cop
as Old man
as Mechanic
as Trucker
as Veterinarian
