The Customer Is Always Right

손님은 왕이다

Also known as Son-nim-eun-wang-e-da, Sonimeun Wangida

In a peaceful barbershop, a timid barber confronts a stranger who has started to send blackmail notes. Whenever the stranger comes to the barbershop, the amount of money he demands becomes greater and greater. Driven to desperation, the barber hires a detective, who discovers a shocking truth about the blackmailer.