This is the story of Penelope Fritter. Penelope Fritter is invisible. Not in the cool, super-power way. She's invisible in the worst possible way -- the symbolic way. This means people can see her. They just don't notice her. That is until she stumbles upon a very mysterious yet tasty smoothie, and everything changes in the best possible way.
It's the first ever Chip Fritter Fest. Chip Fritter is such a superstar the town has decided to rename the Pumpkin Fest in his honor! It's going to be great -- for everyone but his forgettable sister, Penelope, of course. Then a new family, the Phonees, shows up. Penelope thinks there's something very suspicious about the Phonees, like maybe they aren't who they say they are. Could they be up to something evil? Looks like another job for Penelope Fritter: Super-Sitter!