Jose and Luke solve the "Mac & Cheese Mystery" with Grandpa Joe and a magical shopping cart. They journey through a farm-to-table process, meeting a wheat farmer, macaroni maker, dairy farmer, cheese maker, trucker, and grocer. The story subtly teaches about the supply chain, division of labor, voluntary exchange, and cooperation in economics, while highlighting science and technology in food production. Educational takeaways include understanding complex systems and real-world applications of STEAM.