Anxious to take a break from bustling San Francisco, Darcy and her Aunt Abby pack up the food truck and head for the apple festival at Apple Valley, California. Aunt Abby is sure her almond apple tarts will be a hit and Darcy wants to collect more recipes for her food truck cookbook. They soon discover that murder is in attendance when the body of a fellow festival-goer is found, and they must try to stop a killer who is rotten to the core.