One night, Maika comes to her uncle's house in her school uniform. When she looks down and looks sad, she confesses that she can't concentrate on her studies because she masturbates too much. She kneels and begs him to punish her for being such a naughty girl, and enjoys being spanked on the buttocks just like she was when she was little. Thus begins her masochistic training in the name of punishment. She is spanked, tied up, and forced to lick his dirty feet and dick... Maika awakens to the pleasures of being a masochist through her uncle's training.