KBS Drama Special 2011 Episode 6

Kim Gwang Su works for a Mobile Network Operator. His primary job is to get users to cancel their pager service and sign up for newer cellphone plans. Lee Hyeok is one of the remaining holdouts. In order to persuade Lee Hyeok to cancel his pager service, Gwang Su makes a trip out to Tongyeong. There, Gwang Su learns that Lee Hyeok is still holding on to his beeper because he is awaiting his first love to contact him on the device. Gwang Su then makes a deal with Lee Hyeok. Their deal is that if Gwang Su locates Lee Hyeok's first love, then Lee Hyeok will cancel his pager service. (Source: AsianWiki)