This is a love story between Jin-kyeong who obsessively indulges in Min-ah’s body and Min-ah who feels love and friendship at the same time. Jin-kyeong mentally and physically comforts Min-ah who is going through a hard time after her boyfriend disappears. Min-ah is relieved Jin-kyeong is there. One day Min-ah meets Yoon-jae, a student and is mesmerized by the fact that he looks and smells like her ex-boyfriend. Yoon-jae seduces Min-ah and harasses her.

Who's going to let down their guard first? A pretty art tutor VS a muscular and young personal trainer? This sex-less couple's secret tutoring starts now between a pretty art tutor VS a muscular and young personal trainer. Baek-seon and Soo-kyeom are sex-less couple who have been living with each other for 20 years out of loyalty. The two decide to find a hobby for some fun in their lives. Soo-kyeom decides to get personal training and Baek-seon decides to get some art tutoring. Oh dear, they meet handsome and young personal trainer In-hak and pretty art teacher Ji-won! The couple is soon more interested in getting action than getting lessons. What will be the end of their secretive lessons?

Sae-hee couldn't go to sleep from the first day in her new house because of the moaning coming from next door. Sae-hee has never had sex before, but she's writing sex novels. Playboy Seong-hyeon was getting tired of his sex partner Jia when he finds out that Sae-hee is a sex novelist. He begins to help her with her work but really he's using that as bait to get into her pants and he does. Will Sae-hee be able to complete the novel?