Mao Ping has created a new terrible "tickler device". A row crosses the bed from the top to the bottom. On the row slide soft tickling feathers controlled by the evil chinese expert in interrogations. Arianna is bound face up on the bed under the device. Mao Ping, alone with her in the room, first of all strips her naked and then starts to tickle her body from the feet to the armpits. Arianna, tied and naked, can only struggle, scream and laugh until she will surrender to her tormentor....