- Directors: Brad Bird, Jan Pinkava
- Producers: Brad Lewis, John Lasseter, Andrew Stanton, Galyn Susman
- Writers: Jan Pinkava, Jim Capobianco, Brad Bird, Emily Cook, Kathy Greenberg, Bob Peterson
- Genres: Animation, Comedy, Family
- Actors: Patton Oswalt, Lou Romano, Peter Sohn, Brad Garrett, Ian Holm, Brian Dennehy, Janeane Garofalo, Peter O Toole
Remy is an irregular rat who lives in the attic of a French country home with his brother Emile and a pack led by his father Django. Gifted with a keen sense of smell and taste, Remy aspires to be a gourmet chef, inspired by France’s recently deceased top chef, Auguste Gusteau, but instead he is put to work sniffing for rat poison. When the pack is discovered by the home’s occupant, they flee into the sewers; Remy is separated and ends up aground underneath Gusteau’s restaurant in Paris.
Led by his imagination of Gusteau, Remy goes to the kitchen skylight to watch the kitchen in action during a service. There, he observes Alfredo Linguini, the son of Gusteau’s former lover, being hired as a janitor by Skinner, the restaurant’s current owner and Gusteau’s former sous-chef. When Linguini spills some of the soup and attempts to recreate it using random ingredients, Remy is horrified and falls into the kitchen; instead of escaping, Remy attempts to correct the soup. Remy is caught by Linguini just as Linguini is caught by Skinner, but before anyone can stop the serving staff, the soup is served and found to be a success. Colette, the staff’s only female chef, convinces Skinner to retain Linguini, believing him to be the success behind the soup. Linguini takes Remy home, realizing he cannot kill him as instructed by Skinner as Remy was the “little chef” that made the soup.
Gusteau’s restaurant is closed a short time later after a health inspector discovered the rats in the kitchen. Though Ego’s reputation is tarnished on reviewing a restaurant plagued with rats, he eagerly funds a popular new bistro, “La Ratatouille”, run by Linguini and Colette, featuring diner areas for both humans and rats and a kitchen designed for Remy to continue to cook in.