The female phantom thief successfully infiltrates a wealthy man's mansion and obtains a bag filled with treasures. However, the bag unexpectedly releases tear gas, causing her to be captured instantly. When she regains consciousness, she realizes her neck, wrists, and ankles are secured with restraints—but they've already been removed. Instead, she's now bound in a new device that forces her into a kneeling seiza position. This apparatus not only immobilizes all four limbs but also humiliates the proud thief by stuffing a dildo into her mouth. This installment, when combined with the first part (FSS-CS05), delivers a new development and a shocking conclusion worth experiencing.