Suzume Mino, a married woman who became lewd when her son-in-law tortured her with a remote control bike during the day when her husband was away
Suzume, who remarried, was having trouble with her mischievous son-in-law. The pranks gradually escalate, and one day a remote control vibrator that she picked up on the roadside is inserted into her. The son-in-law, smiling faintly on the street during the day as he watches the writhing figure of a "sparrow" and turns the remote control to the "strongest" position, is about to reach maximum pleasure when the switch is turned off...