Sonimeun Wangida (The Customer is always right) (2006)

Seemingly good-natured Ahn Chang-Jin 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. Life seems great for Ahn Chang-Jin ... that is until Kim Yang-Gil begins patronizing his barbershop.