Jay (Neil Maskell) was exhausted by his experience as a soldier in Kiev eight months ago. After returning to the UK, he found it difficult to find a job. He and his wife Shel (Myanna Buring) lived a tight life. In desperation, he and his old partner Gal (Mike Smiley) teamed up to do the work of professional killers. But the mysterious hirelings and strange midnight cult rituals that followed made them realize that they were just pawns in a huge chess game; and the emotional and psychological trauma suffered during his service in Kiev resurfaced, and Jay fell into a huge darkness in reality and psychology without looking back. After returning to the UK, the retired soldier Jay found it difficult to make a living and it was difficult to find a job. In desperation, he and his old partner Gal teamed up to do the work of professional killers. But the mysterious hirelings and strange midnight cult rituals that followed made them realize that they were being used. The film was rated as the strangest, most terrifying and most unexpected British horror film in history. Although the film is interspersed with three genres: family drama, horror film and best friend comedy, the director perfectly integrates these three different genres, especially when shaping the killer brothers, he incorporates the funny techniques that seem to be born with them, which is amazing. Its classic level is no less than the brother image created by Quentin in "Pulp Fiction". The tone of the opening of the film will make the audience mistakenly think that it is a gangster police film in the post-Iraqi era. As the story develops, the overall style of the film officially turns into a horror film. The director likes horror films in the 1970s because the film is a portrayal of that era. Therefore, he wants to bring the sense of the times into his film and create an ordinary family that is in debt and unable to turn over due to many realistic pressures. The only salvation is to close themselves off. Behind the scenes production Before that, director Ben Wheatley shot some short films and animated shorts, and also participated in the filming of some TV series. It was not until 2009 that his first feature film "House of Sin" was released, which won many independent film awards including the British Independent Film Award and the Best Film of the Austin Fantasy Film Festival, which attracted the attention of British film critics. When the film was released in the United States and the United Kingdom, the media in both countries used highly praised words such as amazing and super funny to evaluate it. This unknown director gradually became known to everyone. This film is the second feature film of Wheatley, and it has also been rated as the strangest, most terrifying and most unexpected British horror film in history. The script of the film was co-written by Wheatley and his wife around Christmas 2009. He said that the idea of the film came from the nightmare I had been having since I was a child: a black cult ritual, and everyone was hiding behind the jungle and watching me. When I was a child, I lived in Essex and was often scared by the jungle next to me. The most terrifying thing in the nightmare was that my face became more and more like a piece of bark. Another source of inspiration for the film was Stanley Kubrick's film "The Shining". The tone of the opening of the film will make the audience mistakenly think that it is a post-Iraqi gangster police film. As the story develops, the overall style of the film becomes a horror film. The director said that he hopes that the audience will think that this is a horror film, rather than a crime film defined by the appearance of a killer in it. He said that he likes horror movies from the 1970s, such as the movie "The Letting Go", because the movie is a portrayal of that era. He added that we have experienced the Vietnam War, followed by the Great Depression. Therefore, I want to shoot an ordinary family, but they are under a lot of pressure from reality and are heavily in debt. They can't turn over, and the only thing they can do is to isolate themselves. Anyone would make such a choice. In addition, the movie wants to reflect people who have lost the constraints of moral norms and the corruption of the entire social contract. The set is very relaxed and the editing is very strict. Wheatley said that he was quite relaxed on the set and encouraged the actors to improvise. He said that we would shoot a version according to the script, and then shoot an improvisational version. After repeating this many times, the actors are also used to acting in the way they usually speak.