Rio de Janeiro, the Wonderful City, land of Ipanema, Corcovado, Sugar Loaf, Ratatoing: A city where the most gifted chef in town is a rat! Everyone wants to discover the secrets of Marcelle Toing's delicious recipes, but they are far from imagining the effort this extraordinary cook puts into his search for the best ingredients. Every Thursday night Marcell goes on a mission with his charming assistant Carol and his friend Greg, the worst waiter in town. The three rats search for fine and rare ingredients that can only be found in restaurants owned by humans, where of course they face real dangers from rat traps to cat attacks! The story gets more exciting when a bunch of jealous rats decide to get together and put an end to Ratatoing's culinary success.