Do-hoon meets up with Seo Ye-Eun at So-mi's workplace (Caffe) to discuss the latter's relationship with her father to furthermore understand her psychology. When Do-hoon gets his answers Ye-Eun tries to leave but he doesn't let her go and punishes her for putting him in a bad situation (That's his actual reason for the meetup). It turns out that she came to the caffe commando as he asked. While they were kissing, Ah-young (So-mi's little sister) happened to be at the caffe with a friend, when she saw Do-hoon, she follows him and takes peeks at him and Ye-Eun kissing. Do-hoon notices people's noise just outside and rushes upstairs to continue humiliating Ye-Eun.
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.
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.
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.
Do-hoon reveals his true identity to Ye-eun (his other bully in high school) making all her fears come true. So, she tries to silence him by offering money & a sincere apology but that's not what interests our MC, so obviously he wants to have his way with her in a meeting room using her filmed bullying acts projected on the room wall as a threat.
Mrs. Lee Sohee is a bitch in heat and can't focus on her works. So, she initiates contact with Do-hoon in the workplace. He teases her into being more honest and demanding and so she confesses that she wants his dick. MC then demands that they do it at her place promising he'll do it once Like his boss asked him too. Fast forward, they're at her place in her own room, the two enjoy a very steamy sex session that had So-hee asking for more rounds even with her own daughter around. After the long session, Mc teases his boss by rubbing his feet on her pussy under the dinner table.
While still at the business trip, Do-hoon comes over to Dasom's hotel room and have his way with her and she doesn't stop him (because she already fantasized about doing it with him) and also because she initiated it by kissing him in the bathroom in a work dinner.
Do-hoon, So-hee and Da-som all go on a business trip together. while preparing for the seminar in a empty room the MC pounces on his boss So-hee promising it'll only be oral sex to then breaking his promise and having it all the way.
Do-hoon drops off Mrs. Lee Sohee at her house. Surprisingly, So-mi invites him over. Sohee then asks So-mi to buy something for the guest (Mc) and while she was away at the grocery store, Do-hoon takes his chance being alone with his boss and pounces on her while she was showering.
Do-hoon (MC) finds out that his charming and respectable female boss (Mrs. Lee Sohee) is actually his high-school bully's mother, so in a moment of rage upon seeing his bully in flesh he decides to take revenge. In doing that he decides to tame the bully's mom sexually. So, he makes his move and pounces on her at the workplace late at night.