A father and his teen daughter attend a pop concert only to realize they've entered the center of a dark and sinister event.
In M. Night Shyamalan's latest outing, everyone in a large city is in a frenzy. Why? That's because they're up and ready to watch a concert performed by famous pop star Lady Raven. Two of her fans, a man named Cooper and his daughter Riley, attend the concert with high spirits, but things slowly begin to change their tune. Amongst the screams of adoration and sounds of applause, the concert itself has a hidden identity: a front to fish out an infamous serial killer known as The Butcher. With security cameras rigged, armies of policemen with weapons at the ready, and police vehicles surrounding the venue, will anyone survive their concert experience or is there more to The Butcher than meets the eye?—Affan Jamsari
After a 7-year-long search, the Butcher's reign of terror ends at the packed Tanaka Arena. Tonight, at pop sensation Lady Raven's sold-out concert, the FBI has set up an elaborate trap to catch a monster among thousands of ecstatic fans. This evening, however, is the big chance for local firefighter Cooper to impress his teenage daughter, Riley. But to stop a serial killer in a stadium buzzing with excitement and adulation, you must think like one. As the wolf in sheep's clothing runs out of moves, a question emerges: Aren't predators more dangerous when cornered?—Nick Riganas
In Philadelphia, the fireman and family man Cooper goes with his daughter Riley to the concert of the pop star Lady Raven in an arena. Ariel is a great student and has had three A's and one B at school and he wants to reward her. Soon Cooper notes the movement of several police officers in the arena and the salesman Jamie that he has just befriended tells him that the police know that the notorious serial-killer "The Butcher" is in the concert. Further, there are 3,000 police officers and the arena is under siege. Cooper is "The Butcher" and spends the concert trying to find a way to leave the arena. Riley finds the behavior of her father weird, but she does not suspect anything. But soon Cooper finds a way to leave the arena with Riley without raising any suspect from the FBI and the police officers.—Claudio Carvalho, Rio de Janeiro, Brazil
Philadelphia firefighter Cooper Abbott takes his teenage daughter, Riley, to pop star Lady Raven's concert as a reward for her good grades. There, Cooper notices the unusually high police presence around the concert venue. He learns from a vendor named Jamie that the FBI plans to catch a serial killer known as "the Butcher", having learned he will be in attendance. Cooper is revealed to be the Butcher himself, secretly checking footage on his phone of his latest captive victim, Spencer, in a basement. He steals Jamie's ID card and learns the passphrase that will identify him as an employee, using the card to gain access to a back room and stealing a police radio.
Hearing a woman predicting his movements over the radio, Cooper sets off an explosion in a food stand's kitchen and uses the chaos to access the roof where he learns from a police officer that the manhunt is led by Dr. Josephine Grant, an FBI profile. Confused by Cooper's behavior, Riley asks him to stay with her. She talks about being chosen as Lady Raven's "Dreamer Girl" who gets to dance on stage with the singer and receives backstage access, which Cooper believes has the only exit not covered by the police. Cooper lies to Lady Raven's uncle that Riley recently recovered from leukemia, getting her selected to be the "Dreamer Girl".
However, after the concert ends, Cooper learns that police are also guarding the backstage exit. He privately reveals himself as the Butcher to Lady Raven, threatening to remotely kill Spencer if she does not escort him and Riley out in her limousine. She complies but asks to come to Riley's house, where she stalls for time by explaining the FBI operation to the family, unsettling Cooper by describing Grant's profile of him as someone with maternal issues and obsessive-compulsive disorder. She also explains that the police discovered details about the Butcher's attendance at the concert via a torn ticket receipt left in a vacant house that was reported anonymously.
Lady Raven steals Cooper's phone and locks herself in the bathroom. She obtains details from Spencer about where he was taken and live streams it to her fans, one of whom finds and rescues him. She outs Cooper to his wife Rachel and he locks his family upstairs while Lady Raven texts her driver to contact the police. Cooper attempts to drive off with Lady Raven, but Cooper's family escapes and distracts him long enough for her to flee into her limousine. The police arrive and Cooper flees the house through a secret tunnel before disguising himself using a SWAT uniform and driving the limousine off with Lady Raven. After he reveals his identity, she unlocks the window and draws a mob of fans to stop him so the FBI can catch up. Cooper changes into a fresh set of civilian clothes and gets away.
Cooper returns home and confronts Rachel. Rachel confesses that she had suspected he was the Butcher and left the receipt in the vacant house for the police to find, thus revealing that she was the one who tipped them off. Cooper decides to kill her and then himself, but Rachel persuades him to share some leftover pie made for Riley. After Cooper admits his hatred for Rachel in causing him to miss seeing his children grow up, he realizes Rachel drugged the pie with pills from his tool bag, leading him to hallucinate his mother expressing pride in him for feeling a real emotion. The hallucination is Grant, impersonating Cooper's mother to calm him down, and he is teased by Grant and two SWAT officers as he walks up to her. As he is led away, he stops to adjust Riley's bicycle and shares a tearful embrace with her before being loaded into a police van. As it drives away, Cooper unchains his cuffs with a bicycle spoke he secretly took, laughing to himself.
