After Sun-Young misses a proposal deadline and gets Ho-Jun reprimanded by his superior, he takes punishment into his own hands. During overtime, he spanks her and orders her to wear a vibrator for a full day.
Sun-Young asks her superior Ho-Jun to train her in a Master-Slave BDSM dynamic. His first command is for her to wear a vibrator while walking around. His second command is for her to perform oral sex on him under a table. She keeps his ejaculate in her mouth for the remainder of the workday, which immensely satisfies him. He then rushes her home for an intense sexual encounter.
Mrs. Lee So-hee feels very uncomfortable after running into some unknown man who seems to know about So-mi. So, Do-hoon comforts her with some hot sex. Do-hoon interrogates So-hee during sex, and after a few spankings and hair pulls, he figures out the identity of the unknown man, and it turns out that he's the father of Mrs. So-hee's kids.
Yu Se-Ha corners Kim Bong-Su in the stairwell and asks him why her body heats up every time she thinks of when they had sex in the locker room. Bong-Su says he will help Se-Ha become better if she masturbates, so Se-Ha pulls down her pants and starts fingering herself to improve her volleyball performance (Chp. 5)
Yu Se-Ha makes herself cum fingering herself. Bong-Su reflects that he can change players stats as Se-Ha asks him to changed her stats, but he didn’t realize she would get so horny. He starts fingering her himself as she cums almost immediately. Yu Se-Ha thinks Bong-Su replaced her body with one that’s just horny and Bong-Su bluffs he will change it back if she makes him cum in 17 minutes. Chapter ends with her riding him in reverse cowgirl (Chp. 6)
Yu Se-Ha gets fucked hard in reverse cowgirl before going to one leg-straddle then doggystyle. Bong-Su tells her to keep her moans in as he puts her finger in her mouth. Se-Ha’s tells him she’s had enough but her body doesn’t feel the same. Bong-Su says no one is on the third floor and has Se-Ha crawl up the steps while still getting fucked in doggystyle. She drips on the stairwell as the chapter ends (Chp. 7)
As Se-Ha gets close to the top of the stairwell, she hears voices. She tells Bong-Su this and he said did I say you could stop as he starts pulling her ponytail while fucking her. Se-Ha starts to reach her limit as someone hears them. Bong-Su covers Se-Ha’s mouth as he responds and they don’t get caught. Se-Ha’s mind starts to go blank getting fucked in missionary as she squirts on Bong-Su’s shirt. Scene ends with Bong-Su giving Se-Ha a creampie in missionary. (Chp. 8)
Do-hoon makes Ye-eun attend the shoot afterparty where she drinks too much and gets drunk and dozes off. She awakens all tied up to Do-hoon who's about to torment her and make her submit to him by violating her asshole.