Season 1
| Episode 18 -
Enter the Bullies
Penny is sick and tired of the the Gross sisters. When she tries to get them to stop taking her money, the Gross sisters get really mad and want to hurt Penny. In order to hide from them, she skips school and hides at a museum. The Gross sisters find her but they don't catch her. Penny ends up getting her money back and teaches the Gross sisters about savings accounts.