NOTE: This spoiler was sent in by Eric.
The film opens with Mr. Bean (Rowan Atkinson) driving his lime-green Mini up to a church, where a fête is taking place. Somewhat unexpectedly, Bean wins the first prize in a raffle: a holiday involving a train journey to Cannes and a Sony Handycam DCR-HC96 video camera.
Following a misunderstanding involving a taxi at the Gare du Nord railway station in Paris, Bean is forced to make his way unorthodoxly towards the Gare de Lyon to board his next train towards Cannes. However, a vending machine distracts him from boarding, and he misses his train, giving him an hour to sample French seafood cuisine. At the restaurant, he finds the oysters quite difficult to swallow, Bean pretends he's eating by pouring the oysters onto his napkin and then disposing of them into a near-by lady's handbag. When she reaches into her handbag for her phone, she screams. However, at this point, Bean had left the restaurant.
Back on the platform, Bean asks a man, who happens to be Cannes jury member and Russian movie critic Emil Dachevsky (Karel Roden), to use his camcorder to film him walking onto the train. Bean makes a big fuss and keeps asking for retakes, so by the time they are done, the train is about to leave. Although Bean manages to get onto the train, the doors close before Dachevsky can get on. Dachevsky's son, Stepan (Max Baldry) is therefore left on board by himself.
Bean attempts to befriend the boy, who has been told to get off at the next station, and eventually comes to his rescue at the station, unfortunately missing his train again. The train Stepan's father has boarded does not stop at the station, and a mobile number is held up, with the last two digits obscured. Attempts at calling the number prove fruitless. The next train comes and they board. However, Bean has left his wallet, passport and ticket on the station public telephone. Without them, the duo are forced to leave the train.
Attempts at begging and miming to Puccini's O mio babbino caro prove successful, and Bean buys them a bus ticket to Cannes. Bean managed to lose his ticket, getting the ticket stuck on a chicken's foot. Mr Bean then follows the chicken into a ute (Peugeot 504 Ute) and ends up in the middle of a chicken pen. He then walks for a while. Mr Bean soon falls asleep, exhausted from walking and wakes up on what appears to be a quaint French village but is actually a film set for a yogurt advertisement. Bean ends up as an extra in the advertisement, directed by Carson Clay (Willem Dafoe), but inadvertently ends up destroying the set in an explosion.
Bean then tries to hitch-hike again and a lime-green Mini identical to his own picks him up, driven by actress Sabine (Emma de Caunes), who offers him a lift to Cannes. She is an aspiring actress on her way to the 59th Cannes Film Festival where the film in which she makes her debut is going to be presented. When they stop at a service station, Bean finds Stepan dancing in a café with a band. Sabine agrees to take him with them.
Due to communication difficulties, Sabine thinks Stepan is Bean's son, while Stepan thinks Sabine is Bean's fiancée. On the road again, Bean asks Sabine if she has a mobile phone, which she promptly gives to Bean. Bean and the boy now attempt to call his father again, but to no avail, and the trio end up driving through the night.
When Sabine goes into a petrol station to change for the premiere, she sees a newsflash, Mr. Bean is suspected of kidnapping Stepan and that she is suspected to be his accomplice. However, since she does not want to miss the presentation of the film in Cannes in just one hour, she does not want to go to the police now to clear the misunderstanding. They have to work out a way to get into Cannes without being identified. Stepan dresses up as Sabine's daughter, while Mr. Bean dresses up as Sabine's mother. They manage to get through the search and Sabine arrives at the premiere on time.
After sneaking into the premiere, Bean is disappointed to see that Sabine's large role has been cut from the film, and ends up plugging in his video camera to the projector, where his video diary is unexpectedly played out. However, the bizarre tale it tells fits director Carson Clay's narration well, and the director, Sabine and Bean all receive standing ovations. Stepan is finally reunited with his father.
After the screening, Bean leaves the building going through the back door, and onto the beach, encountering many of the characters from the film. The film then ends with Bean and all the other characters of the film miming a large French musical finale, singing along with the famous song by Charles Trenet "La Mer" (Beyond the Sea), with arms raised in the air. After the credits Bean writes with his foot "fin" in the sand. Carson Clay is happy, even after all the mess, since his premiere goes well.