Do-Hoon sets his eyes on his target; it's Mrs. Lee So-hee's youngest daughter Han Ah-young. He invites her to talk over dinner. Before time got late, he sends her home earlier than expected & planned to meet next weekend. When the time came, they went on a date together, and at the end of the day, they go to a motel together, and they get straight to having sex where Do-hoon takes Ah-young's virginity. He starts fucking her gently and very considerately, but she wants to fuck her the way he likes (roughly) to get him to like her.
Yunho came to Sunmi's house to inform her that he's quitting but she's already waiting for him in sexy lingerie ready for the fucking for one last time
Da-som coincidently finds Do-Hoon's old ID on the floor. She later returns it to him asking some questions. Do-Hoon then decides to tell her about his painful past, and so she feels guilty about asking questions and hugs him. MC uses this situation to invoke jealousy into Mrs. Lee Sohee. The latter leaves them all alone for a work meeting & the work mates don't waste any time and they get straight to fucking.
Bora is extremely bitter and obsessed with the idea of breaking apart Yunho & Yoosun. So, she stalks Yunho throughout the whole summer. One day, the in-laws go on an outing together with Hayul too, she stalks them through the entire day. She feels that she wasted her time doing so as nothing suspicious happened during the whole day, but later at night her fears come true as she clearly sees Yunho and Yoosun fucking passionately. She interrupts them and gives them a good scolding & even threatens to snitch.
Yejin is fed up with Yubin coming over to get fucked by Jinhoo and her "innocent and refined act" in the midst of all that as she feels that her "personal cock" is being stolen. One day, she ordered a suspicious pack (it's full of sex toys) and stated that she'll "Bring out the fake bitch's true colors". When Yubin arrived at their place, Yejin welcomed her and gave her a cold drink (it's spiked). After drinking the drink, Yubin fainted and then woke up to find herself tied up to the bed, she asked 'what's going on?' Yejin shamelessly lied to her and told her that Jinhoo is too worn out from fucking the both of them and that they have to give him a little LESBIAN show to get him turned on. Yubin didn't mind if it's for the sake of Jinhoo and then she asked about what she's supposed to do, Yejin told her to just lay back and enjoy getting played with her body. Yejin started her show by shoving a vibrator in her victim's pussy, then she proceeded to bring out her Custom-made Strap-on that is the exact same size as Jinhoo's cock. Before fucking her, she wanted to humiliate her and make her beg for it, so she told her to say: 'Please put that cock in my slutty pussy', as soon as Yubin uttered those words, Yejin started fucking her with the strap-on with Jinwoo watching through the whole show. When Yejin noticed that he's turned on, she invited him to join them, Jinwoo hesitated at first as Yubin's pussy is already preoccupied with the strap-on. Yejin told him to stick in her BUTTHOLE as it' the only free hole, he still hesitated because Yubin never tried anal sex before, the two girls managed to convince him, and then he proceeded to thrust his dick in her asshole. Yubin felt a pleasure like never before as she got fucked in her pussy and had her anal virginity taken simultaneously to make for a mind-blowing double penetration experience, she never had before.
After a boring sex session with her husband, Yoosun wants to get a taste of real dick from her husband's brother who was right behind her room's door waiting to fuck her.
Yoosun shamelessly comes back to the couple's place to fuck Yunho in the woods. Upon seeing her off Yunho jums Yoosun in the car and almost gets caught cheating by his girlfriend.
After Yunho's breaking up with Bora, Yoosun's happier than ever and pounces on her brother in-law. After the sex session, Yoosun wants to sleep with Yunho's dick inside her.
Ga-yung takes Kyung-Ho with her to see something interesting...it's a couple fucking outdoor. They get her all fired up and so she initiates the sex despite Kyung-Ho not being comfortable doing it outside.
After nude modeling for Professor Cha, Kyung-Ho and Bora dine together. They later go to her place and after chit-chatting for a while, they get horny and have sex.
Ga-yung's laptop broke down, she wants Kyung-Ho to fix it, but it's not only the laptop that she wants fixed as they fuck in the practice room at night. but they aren't at it for so long as they get interrupted by Seung-ah.
Seung-Ah lists the good things about Kyung-Ho ...it's only his big dick. Instead of feeling bad he gets horny and talks his way into having sex with her again.
After fucking Ga-yung, Kyung-ho gets out to get some fresh air where he runs into Seung-ah. Thet chit chat a bit but they horny super quick & fuck in the open.