Celestine is a young mouse who lives in the underground world of rodents. At the orphanage where she lives, the caretaker known as the Gray One tells scary stories about the evil nature of the bears that live in the outside world, though Celestine doubts that they are entirely true. She loves to draw but must soon study dentistry, since that's what all rodents do, and to prepare, she must travel above ground to collect the lost teeth of a cub from underneath pillows. On one such occasion, the bear family catches Celestine in the act and chases her into a trash can where she is trapped and spends the night. The next morning, a destitute and starving grizzly bear named Ernest discovers Celestine and attempts to eat her. Celestine convinces him to let her go by helping him break into the basement of a candy shop, where he can eat his fill. He is soon caught by the store's owner, however, and arrested. Celestine, who is behind on her quota of collected teeth, agrees to free him from the police wagon if he will help her break into and rob the teeth from the office of the store owner's wife, who happens to be a dentist.
Although the robbery initially seems successful, the pair soon find themselves being pursued by the police forces of both the rodent and bear cities. They manage to evade capture by stealing a van, and escape to Ernest's remote cabin. Ernest is initially reluctant to allow Celestine to stay with him, but they begin to bond after he discovers her love of art. He reveals to her that his current destitution is a result of his rejection of his family's plan for him to go into law, like his ancestors, due to his desire to become an entertainer. The two spend the winter happily together, though their joy is somewhat dampened by the constant radio broadcasts declaring that both police forces are still searching for them as well as how civil unrest has become rampant around both of their homes with the once submissive and complacent poor now rising up against their upper class oppressors.
In the Spring, the police are able to track the stolen van to the cabin. Ernest is arrested by the rodents, while Celestine is arrested by the bears. Both are simultaneously put on trial, in the main floor and basement of the same courthouse. Though each of them protest their unfair treatment along with the government's bias and prejudice, as well as refusing to sell out their respective companion, the furious judges refuse to listen. Ernest and Celestine then call the judges and the rest of the higher class out on their cruelty to the lower class common folk. During the proceedings, a fire is accidentally started in the courthouse, and while the rest of the citizens flee despite the furious judges' demands to stay, Ernest and Celestine each stay behind to rescue their respective judges. The judges are both humiliated and broken that their people, the ones they thought they could always rule, have abandoned them to save their own lives while the ones they sought to wrongfully punish are their saviors. Having truly admitted defeat in their own hearts, the shameful judges drop the charges against them and have no other choice then to grant their wish to be able to remain living together. All the while, the judges express their inability to comprehend the concept of unconditional bonds; and can only watch along with the shaken populace of each place as the courthouses burn to the ground.
Reunited in Ernest's cabin, the pair decide to write and illustrate a book, telling the story of their friendship, though with some embellishments after Celestine protests including the part of their meeting where Ernest attempted to eat her.
Ernest & Celestine received acclaim from critics. The film review aggregator Rotten Tomatoes reports a 98% approval rating, based on 81 reviews with an average score of 8.20/10; the general consensus states: "Sweet and visually charming, Ernest & Celestine offers old-fashioned delights for animation lovers of all ages."[14]Metacritic assigns a score of 86 based on 22 critics, indicating "universal acclaim".[15] Andrew Chan of the Film Critics Circle of Australia writes, "The result is a human story of two unlikely allies, a mouse living in harmony and befriending a bear. It is essentially that simple and it works just fine."[16] Writing on Roger Ebert's website, Glenn Kenny of MSN awarded the film 3½ stars out of 4, praising it for its positive messages of friendship. Kenny wrote: "Ernest and Celestine is the coziest movie you'll likely see all year. Every frame is suffused with a fireplace kind of warmth that, for me at least, cast an immediate spell that didn't let up."[17]
A television series is adapted from the film, Ernest & Celestine, The Collection, made up of 52 episodes of 13 minutes[27][28] and broadcast on France 5 on 1 April 2017. Near the end of 2017, a selection of four episodes of the series was released in theatres under the title Ernest & Celestine in Winter.[29]
Sequel
In February 2022, StudioCanal announced that a sequel entitled Ernest & Celestine: A Trip to Gibberitia was in production, to be released on 14 December 2022. The film was directed by Julien Chheng and Jean-Christophe Roger.[12]