The film opens with a prologue set in 1981, where a young boy named David Glatzel is experiencing a terrifying possession. His family, desperate for help, seeks the assistance of Ed and Lorraine Warren, renowned paranormal investigators. During a tense exorcism led by Father Kastner, David is seen writhing in agony, his voice distorted as he speaks in tongues. The atmosphere is thick with fear as the priest attempts to expel the demon. In a climactic moment, David's older sister, Arne Johnson, intervenes, offering himself to the demon in a bid to save David. The demon accepts, and the exorcism ends with a violent confrontation, leaving the family shaken but relieved that David is freed.

Fast forward to 1981, a few months later, Arne and his girlfriend, Debbie, are living a seemingly normal life. They are shown to be deeply in love, and Arne is portrayed as a caring boyfriend. However, the peace is shattered when Arne, while at a dog grooming job, begins to experience strange visions and violent impulses. One day, while at the grooming shop, he is confronted by a man who threatens him. In a fit of rage, Arne brutally attacks the man, resulting in his death. This shocking act of violence sends shockwaves through the community and leads to Arne's arrest.

As Arne is taken into custody, Lorraine and Ed Warren become involved in the case, believing that Arne's actions are linked to the demonic possession that affected David. They visit the scene of the crime and begin to investigate the circumstances surrounding Arne's violent outburst. Lorraine experiences a vision of the events leading up to the murder, revealing that Arne was not in control of his actions. The Warrens are determined to prove that Arne was possessed at the time of the crime, which would be a groundbreaking defense in court.

The Warrens delve deeper into the investigation, uncovering a connection to a cursed object--a witch's totem that was linked to a satanic ritual. They learn that the totem was used to summon a demon, and it is believed that this demon is responsible for the violent behavior exhibited by Arne. Lorraine and Ed visit the home of the witch, where they encounter a series of supernatural occurrences that heighten the tension. Lorraine's psychic abilities allow her to sense the malevolent presence, and she becomes increasingly concerned for her husband's safety.

As the investigation progresses, the Warrens face numerous obstacles, including skepticism from law enforcement and the legal system. They gather evidence to support their claims, including testimonies from David and his family, but the court remains unconvinced. The couple's relationship is tested as they navigate the dangers of their investigation, with Lorraine expressing her fears about the toll it is taking on Ed. Despite the risks, Ed remains steadfast in his commitment to help Arne and prove his innocence.

In a pivotal moment, the Warrens discover that the witch's totem is hidden in a secret location. They confront the witch, who reveals her intentions to unleash chaos and destruction. A fierce battle ensues, with Ed and Lorraine fighting against the witch's dark magic. Lorraine is nearly killed during the confrontation, but Ed manages to save her, showcasing their deep bond and unwavering love for one another.

The climax of the film occurs during Arne's trial, where the Warrens present their findings. They reveal the connection between the witch's totem and Arne's actions, arguing that he was under the influence of a demonic force. The courtroom is filled with tension as the jury grapples with the unprecedented defense. Ultimately, the judge rules in favor of Arne, acknowledging the possibility of demonic possession, which sets a legal precedent.

In the aftermath, Arne is released, and the Warrens reflect on the harrowing events they have experienced. They reaffirm their commitment to each other and their mission to combat evil. The film concludes with a sense of resolution, but also leaves the door open for future encounters with the supernatural, hinting at the ongoing battle between good and evil.

In the ending of "The Conjuring: The Devil Made Me Do It," Ed and Lorraine Warren confront the demonic entity that has been tormenting Arne Johnson. They discover that the entity is tied to a witch's curse and must perform a ritual to break it. After a tense confrontation, they succeed in saving Arne, who is exonerated in court. The film concludes with Ed and Lorraine reaffirming their love for each other and their commitment to fighting evil.

Now, let's delve into the ending in a more detailed narrative fashion:

As the climax of the film unfolds, Ed and Lorraine Warren find themselves in a dark, foreboding forest, the air thick with tension and the weight of the supernatural. They are on a desperate mission to confront the malevolent force that has ensnared Arne Johnson, the young man accused of murder after being possessed by a demonic entity. The couple's bond is palpable; they are not just partners in their work but deeply in love, and their shared determination to save Arne fuels their resolve.

The scene shifts to a dilapidated house, where the Warrens believe the source of the curse lies. Inside, they discover a hidden altar adorned with sinister symbols and a doll that serves as a conduit for the witch's power. Lorraine, using her psychic abilities, senses the presence of the witch, who has been manipulating events from the shadows. The atmosphere is thick with dread as they realize the stakes: Arne's soul hangs in the balance, and time is running out.

In a moment of urgency, Ed and Lorraine perform a ritual to sever the connection between Arne and the witch. The tension escalates as they chant incantations, and the air crackles with supernatural energy. Suddenly, the witch appears, a terrifying figure cloaked in darkness, and she unleashes her fury upon them. Ed is thrown back, injured, but Lorraine remains steadfast, her love for Ed and Arne giving her strength.

As the confrontation reaches its peak, Lorraine is drawn into a vision of Arne's torment, experiencing his pain and fear. She fights through the vision, determined to reach him. In a climactic moment, she calls out to Arne, reminding him of their love and the strength that comes from it. This connection breaks the witch's hold, and Arne, in a moment of clarity, fights back against the possession.

With a final surge of energy, Lorraine and Ed manage to complete the ritual, banishing the witch and freeing Arne from her grasp. The atmosphere shifts from oppressive darkness to a sense of relief as the evil dissipates. Arne, now free, is exonerated in court, and the charges against him are dropped. The courtroom scene is filled with a mix of disbelief and gratitude as Arne's family embraces him, tears of joy streaming down their faces.

In the aftermath, Ed and Lorraine return home, their bond stronger than ever. They reflect on the harrowing experience, acknowledging the dangers they face in their line of work. The film closes with a poignant moment between them, a reaffirmation of their love and commitment to each other and their mission to combat evil. They stand together, united against the darkness, ready to face whatever challenges lie ahead.

The fate of the main characters is as follows: Arne Johnson is freed from the demonic influence and exonerated, allowing him to return to his life. Ed Warren, despite sustaining injuries during the confrontation, emerges with his spirit unbroken, continuing his work alongside Lorraine. Lorraine Warren, having faced her fears and the darkness of the witch, remains a steadfast partner to Ed, their love serving as a beacon of hope against the malevolent forces they encounter. Together, they continue their journey as paranormal investigators, committed to protecting others from the evils they have faced.

In "The Conjuring: The Devil Made Me Do It," there is no post-credit scene. The film concludes with the resolution of the central conflict surrounding the trial of Arne Cheyenne Johnson, who claims demonic possession as a defense for murder. The final moments focus on Ed and Lorraine Warren reflecting on their experiences and the nature of evil, emphasizing their commitment to fighting against dark forces. The absence of a post-credit scene keeps the narrative tightly wrapped, leaving the audience with a sense of closure regarding the Warrens' investigation and the implications of the case.

Arne Johnson is a central character in 'The Conjuring: The Devil Made Me Do It.' He is portrayed as a young man who becomes possessed after a series of supernatural events linked to a demonic curse. His possession leads him to commit a violent act, specifically the murder of his landlord, which sets off a legal battle where he claims demonic possession as a defense.

Ed and Lorraine Warren, the paranormal investigators, become involved in Arne Johnson's case after he is arrested for the murder of his landlord. They are called upon to help prove that Arne was possessed by a demon at the time of the crime. Their investigation leads them to uncover a deeper, more sinister plot involving a curse and a powerful occultist.

The Occultist, who is revealed to be a key antagonist in the film, is significant because she is responsible for the curse that leads to Arne's possession. She uses dark magic to manipulate and control individuals, and her actions are tied to a series of tragic events that unfold throughout the story. The Warrens must confront her to save Arne and stop the cycle of violence.

During Arne's possession, several supernatural events occur that highlight the severity of his condition. These include violent outbursts, moments of unexplainable strength, and disturbing visions. The film depicts these events through intense scenes where Arne struggles to maintain control, showcasing the internal battle between his will and the demonic influence.

The film portrays Ed and Lorraine Warren's relationship as deeply loving and supportive, emphasizing their bond as they face the challenges of the case together. Their emotional connection is tested by the dangers they encounter, but they consistently demonstrate trust and reliance on one another. Lorraine's psychic abilities and Ed's steadfastness as a protector are highlighted, showcasing their partnership in both their personal lives and their work.

The Conjuring: The Devil Made Me Do It is not considered family-friendly due to its intense themes and graphic content. Here are some potentially objectionable or upsetting aspects that may affect children or sensitive viewers:

1. Supernatural Violence: The film includes scenes of violence that are tied to demonic possession, which can be disturbing. This includes physical confrontations and moments where characters are harmed.

2. Demonic Imagery: There are unsettling depictions of demonic entities and rituals that may provoke fear or anxiety.

3. Possession Themes: The central theme revolves around demonic possession, which can be frightening and may not be suitable for younger audiences.

4. Mature Themes: The film explores themes of evil, morality, and the supernatural, which may be too complex or distressing for children.

5. Intense Emotional Moments: Characters experience fear, despair, and trauma, which can be emotionally heavy and unsettling.

6. Graphic Scenes: There are moments that depict blood and injury, which may be graphic and disturbing for some viewers.

Overall, the film's horror elements and mature themes make it more appropriate for older teens and adults rather than children.