Aunt Polly makes an incredible pie. Apple, rhubarb, peanut butter raspberry... The entire town of Ipswitch is absolutely nuts for them. Alice adores her aunt as well as the delicious pies that she's so famous for.
Then Aunt Polly passes away. Alice and the rest of Ipswitch not only mourn her loss but the loss of her world famous pie crust recipe that no one knows how to duplicate. Strangely, Aunt Polly leaves that world-famous secret recipe to her cat Lardo, and leaves Lardo to Alice! Alice and her friends Charlie begin to see just how much Aunt Polly's pies meant to everyone, and realize that Lardo's life may be in danger.
It's up to them to get to the bottom of what's going on without getting themselves in trouble. They have to figure it out — for the sake of Aunt Polly and for the sake of those delicious pies.