SUMMERTIME - AND THERE'S VILLAINS A-PLENTY! Summer is here, and all the citizens of Townsville are heading out into the sunshine and fresh air to enjoy the happiest and most carefree season of the year - including the city's surprisingly substantial population of supervillains! In fact, when resident heroes The Powerpuff Girls arrive for a day of fun at the Townsville Amusement Park, they're shocked to discover that the rides are clogged with lawbreakers and malefactors of every description - and what's worse, the Mayor himself seems to be responsible for inviting them in! The girls try to raise the alarm, but their warnings fall on deaf ears. And so, once again it's up to Bubbles, Blossom, and Buttercup to right that which is wrong and put the evildoers on ice - as well as ferreting out the real reasons for the Mayor's impeachable behavior!