I hope this sex letter reaches you..! Minseok starts writing letters while reminiscing about the women he has had sex with. Jubin, who loved costumes and roleplay concepts. Sojin, his friends girlfriend who enjoys sadistic (S-inclined) sex. Jisoo, a masochistic (M-inclined) pervert who desires to be abused. Now! Lets see who among you is the best..!