Jo visits the Park family and for the first time, parents Heather & Michael and the family nanny, Alejandra call for Supernanny's help with the Park kids: 6-year-old son Kyle, 4-year-old daughter Farley, and 2-year-old son, Pierce. Kyle has ADHD, but his parents took him off his medication because they thought it wasn't working for him and since then, Kyle has gotten completely uncontrollable and terrorizes Alejandra. The kids act out and ignore instructions and take dangerous risks such as going into the swimming pool with permission, Kyle has played with scissors and cut his own hair, and little Farley has dangerously dangled over the hallway banister in the foyer. Not only do the kids act physically towards each other, they also hit their parents and their nanny. When Jo expresses how shocked she is at Heather for taking Kyle off his ADHD medication and how to deal with his issues, it reduces Heather to tears. Can Jo help the parents gain control over their kids?