Rainbow has been bullying the other girls in class for the past week. As punishment she must stay after school in detention and write lines on the board. Little do her classmates know, Rainbow becomes extra grumpy towards them when her Step-Daddy makes her wear diapers 24/7 as discipline for failing grades. Rainbow writes her lines, taking her time and sighing all the while. As she writes closer to the bottom of the board, her shameful diaper shows. Thankfully only the teacher is there to witness her secret.