Noraebang: Hot Women 2

The special secret to a successful noraebang is revealed! The noraebang where Hee Jin works is for customers who want a call-girl. When they start turning around and leaving, Hee Jin decides to become a call-girl herself and even brings her friend Seong Hee in. Rumors of Hee Jin and Seong Hee's beauty and service quickly spread and more customers come. When they've made enough money, Hee Jin and Seong Hee decide to open their own noraebang and display a hidden special service.
(Source: HanCinema)