A woman wearing a blindfold has a gag ball stuffed into her mouth. She struggles helplessly, clinking the handcuffs hanging from the ceiling, but her situation shows no sign of improving. Then, a mouth-obsessed master appears and replaces the gag ball with one attached to a chain, forcing her to drool excessively while being made to moan against her will. Later, she is fitted with an open-mouth mask, allowing her mouth to be thoroughly examined. Afterward, a bag is placed over her head, leading into further developments.