A pure amateur girl named Mihoko, who is simply curious about lesbianism, receives lesbian kissing instruction from Yui Kawagoe, a professional in fetish lesbian acts. Though Mihoko is interested in lesbian experiences, she's inexperienced and visibly nervous. Yui gently eases her tension, teaching her lewd, lustful lesbian kissing in great detail. Their long tongues intertwine intensely, creating thick, saliva-filled French kissing scenes. In the end, they repeatedly exchange saliva over and over, eventually progressing to swallowing each other's spit—an ultimate lesbian moment that represents the pinnacle of lesbian intimacy. Under Yui's guidance, Mihoko becomes completely enchanted by the allure of lesbian love.