Brick, Boomer and Butch, collectively known as the Rowdyruff Boys, had just robbed a bank. They were now on their way back to Mojo Jojo's observatory. Suddenly, the girls appeared in front of them. "Not so fast, Rowdyruff Boys!" the girls cried.
The boys were taken aback by the girls' new appearances. Expecting the 5-year-old Powerpuff Girls, they were shocked by the 16-year-old Powerpuff Teens. Nonetheless, they attacked. This proved to be their downfall, as the girls' advanced age also gave them more powers that were greater than those of the boys.
The girls took the boys to jail. In their cell, Brick asked, "How did those girls beat us? We've always been evenly matched!" Boomer responded, "It must have something to do with their older appearances. If we get as old as them, or even older, we can beat them!"