The Customer is Always Right (2006)
Release date: February 23, 2006
Seemingly good-natured Ahn Chang-Jin (Sung Ji-Ru) owns his very own barbershop in a quiet town. He makes sure to have the place immaculate for customers and even plays classical music for just the right mood. Furthermore, Ahn Chang-Jin is married to the beautiful Jun Yeon-Ok (Sung Hyun-Ah). Life seems great for Ahn Chang-Jin ... that is until Kim Yang-Gil (Myeong Gye-Nam) begins patronizing his barbershop.
Kim Yang-Gil tells Ahn Chang-Jin that he knows his secret. Kim Yang-Gil then asks for hush money after each visit, with the amount doubling every visit. Soon, Ahn Chang-Jin finds himself having to borrow money from loan sharks to keep Kim Yang-Gil quiet. Ahn Chang-Jin then decides to hire a private investigator (Lee Sun-Kyun) to dig up some dirt on Kim Yang-Gil.
Online with English sub:
Lee Sun Gyun in the film.