Joo-ah borrowed money from Si-hoo and then cut off all contact. Si-hoo eventually tracks her down in person. Joo-ah keeps promising that she’ll pay him back, but Si-hoo pressures her to repay the money right away.
Joo-ah then takes him to the place where she works and shows him what she actually does. In a private room where the two of them are alone, Joo-ah begins to seduce Si-hoo. Unable to resist her temptation, Si-hoo gives in and starts having hot, passionate sex with her.