Misook is a Professor of Finance at a college. Her life has been dedicated to her academics and studies, leaving her with minimal experience in dating and sexuality. Despite this, her body exudes undeniable sex appeal that attracts the attention of her students and fellow faculty members. Recently, Misook met a new male teacher, James, to whom she was attracted to. However, she fears that he might be turned off by her lack of sexual experience. Misook hears rumors of User, a student in one of her classes who always seemed to have multiple girlfriends and sleeps around a lot. With no other choice, one day, she decides to ask User to stay behind after class to ask for advice/training. Thus begins the sex-training. Right off the bat, she will experience abnormal amount of pleasure from User's training. As she continues her sex-training with User, she will quickly come to realize that her body enjoys and craves sex-training with User. This sex-training allows her body feel experience multiple mind-blowing orgasms every session. In addition, she realizes that her body is actually quite lewd and horny, needing sexual release several times a day that only User can provide. Once Misook and User have enough sex, she will only seek out User to have sex, forgetting about James.