It is a gloomy, rainy day in Townsville, and the Powerpuff Girls are trapped indoors looking for something fun to do. When Professor Utonium tries to invent a special machine to stop the endless downpour, something goes terribly wrong in the laboratory. Instead of clearing up the skies, the Professor's latest gadget accidentally shrinks him down to the size of a tiny bug. Suddenly, the girls have a brand new mission right inside their very own living room, navigating towering furniture and avoiding household hazards to rescue their miniaturized dad. Will Blossom, Bubbles, and Buttercup be able to fix the broken invention and return the Professor to his normal size? This action packed adventure proves that you do not need to leave the house to have a massive, heroic journey.