Mr. Beans Holiday is a film about Mr. Bean and how he lives an ordinary life. However, his life changes when he gets the chance to travel to the Cannes Film Festival after accidentally winning a raffle draw. Aside from the trip, he also won a nice looking HD camera to create all of his memories. When he goes to his trip, he stumbles upon a father and son who board the same train as him on their way to Cannes as well. He ends up struggling as he sees the father isn't able to make it on the train but his son is already on the train. So Mr. Bean decides to take good care of the young boy as he tries to find the dad.
Along his way, he even ends up finding a young girl who loves to act and is a part of one of the movies in the film, but after she asks Mr. Bean to bring her to the Cannes Film Festival, he brings her along. By the time they go to the Film Festival, they have to sneak inside while the girl is able to make it to the movie that she was in. What happens in the movie theater is that the young boy's father was at the event as well watching the movie.
Mr. Bean is then explained as a weird person because he was with the young boy all along. However, after the movie screen accidentally showcases the home videos that Mr. Bean made and that he is a good guy and took care of the boy, everybody applauds and the director of the movie ends up making it seem like the video was his movie.
Mr. Bean still acts like his normal self at the end of the movie, but he finds that he is a better person because of the experience. He also finally gets the chance to see what he always wanted to see; the beach in Cannes.