Every day, she is trained to be a masochist by her abusive master. Treated worse than a pet, she is taken out into the outdoors and humiliated naked... "I'll do any command or sexual service, so don't abandon me..." she is trained as a sex slave to find pleasure in embarrassing and miserable things. One day, her master gets tired of her and abandons her almost naked in the street... The man who picked her up treats her gently and respectfully like a normal girl, and the girl, who has lived her life as a sex slave, writhes in pleasure from his gentle caresses and says, "I never knew sex could really feel this good..." and finally frees her from the curse of being a sex slave through her first loving sex...