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.
Yu-Ri leaves her husband alone for days to be at her parent's home to clear her head. She had called Yu-Mi in advance to take care of him in the meantime. Su-Heon takes the opportunity to make advances on her.
Gangchan wants to learn some workout exercises from Seyoung but that takes a weird direction. She then pounces on him while he was still asleep. Gangchan wakes up to Seyoung being on top of him, and then SHE FUCKS THE SHIT OUTTA HIM.