Au-jin is a mother of two children and wife to a husband in deep financial difficulties. To augment her income, she works for a telephone sex-chat service. After a chance meeting with Madam Kim, she is offered a job in an all-night bar acting as a companion for lonely men. She is uncomfortable as the level of services she must provide increases, until one day she is introduced to a customer who appears to treat her affectionately and lovingly. Could he be the one for her, the one to take her away from all this?
The wife starts working as a companion for men in a karaoke bar, but she has reservations about having sex with them for money. She agrees to have sex with one client at 26:39, but the guy is too aggressive and doesn't want to pay her first so it doesn't materialize.
The wife then meets a customer she likes because he treats her affectionately and lovingly. She has sex with him at 36:25 and 46:01.
Any hope that the wife feels towards the fruition of love between her and the customer is dashed when he makes a certain request from her at the end: to have a threesome with him and his senior co-worker. The co-worker saw them dating at a restaurant and I think either he blackmailed the wife's customer or he asked to have a threesome in exchange for some corporate favor.
The threesome happens at 1:29:13. It's done surprisingly for us audience, and also in a manner in which the wife's customer looks cuckolded as his senior co-worker is the one solely banging the wife for most of the threesome, both of which makes it hot.