Iris is in big trouble for teasing her step-sister about her diapers. To remedy the situation, she is bent over the side of the crib for a long, hard spanking with the tawse. Once Step-Daddy is certain she has learned her lesson, she is told that she will be spending a week in diapers to better understand her step-sister's humiliation. Over to the changing table they go as Step-Daddy puts Iris in a thick, fluffy diaper.