The film is adapted from a novel by Joe Dunsang. Both the screenwriter and director are known as Richard Ayoade for starring in "IT Madman". For this director who has directed many MVs, the biggest challenge in shooting a feature film is to write the script. Because it is not easy to adapt a novel into a screenplay. Richard Ayoade said: "The biggest challenge is how to write the script with a different feeling. You must know that the people in the story have their own personalities and life trajectories, and you cannot simply deal with them in one way. In order to highlight I used different colors to represent different characters in the movie. This was designed before I started adapting the script. In addition to these, I also used a lot of experience I accumulated when shooting MTV, Try to make the overall style of this movie as refreshing as possible."
"Submarine" has a nostalgic and traditional temperament, complemented by the film's frequent jokes and waves of emotional "attacks". Richard Ayoade said that when we are adults, we will always do things that we yearned for when we were young. For example, when I was an adult, I did a lot of things that I could not do when I was fifteen. Therefore, I showed a kind of emotion of "remembering the past" in the film. I played down the background of the film and didn't show too many high-tech things in the film. All this is to show the feeling of being a child. I couldn't help but laugh when I was shooting this movie, and I also hope that the audience will laugh when they see it. But in the second half of the film, this kind of laughter is not because I made you laugh with jokes, but because of the structure and story of the film. Many people think that the role of Oliver Tate is a silly idiot, but this is actually a true portrayal of me. Whether in real life, in TV series, or in movies, I feel that I am a clumsy person. This role can be regarded as a portrayal of me. "
