Setsuna is a rookie nail artist struggling to attract regular customers during a brutal recession. She asks a handsome, charismatic artist at a new neighborhood salon to train her, and he readily agrees—but his friendly smile hides darker intentions. His lessons grow increasingly obscene until he ties her up “to correct her posture,” strips her, and gropes her all over. Her pleas are ignored under the promise of gaining loyal clients. He makes her squirt with polish, forces her to urinate for the base coat, and finally fills her vagina with a huge load of his so-called top coat.