On
eviction night of
Big Brother, reports of violent disorder across the UK raise the possibility that the live show will be cancelled. Inside the house, contestants Marky, Veronica, Grayson, Joplin, Angel, Space and Pippa remain oblivious.
Producer Patrick bullies and berates his staff as presenter
Davina McCall prepares for the broadcast. Production runner Kelly is having an affair with a co-worker, while her boyfriend Riq is stranded at a railway station after his van is stolen. Elsewhere, a driver is bitten by a zombie and reaches the production compound just as he dies and reanimates, attacking a security guard. As Pippa is evicted, the infected guard stumbles into the crowd, dies and turns; the infection rapidly spreads through the compound. Zombies overrun the studio, killing the audience, crew and Davina. Kelly survives by barricading herself in an office, while Patrick saves himself by sacrificing others and takes refuge in a
green room with the newly evicted Pippa, as zombie Davina prowls nearby. By morning, the housemates remain cut off and confused by Big Brother’s silence, with only Space sensing something is wrong. Kelly tries to escape in a van but is forced back inside; chased through the camera runs by a zombie cameraman, she enters the house via a Diary Room side door. The housemates assume she is a new contestant until she warns them about the outbreak and the danger behind the
one-way mirrors. When Marky opens a fire exit to taunt her, the cameraman bursts in, bites Angel, and is killed by Kelly with a fire extinguisher. Riq survives by hiding in a petrol station until he is rescued by a hardened survivor, Alex. After their vehicle breaks down and zombies give chase, they take shelter in a country house. In the Big Brother house, nurse Grayson lacks supplies to treat Angel’s bite, so the group confines her to the greenhouse. Kelly, Marky and Space raid a nearby supermarket in the van. Police responding to
looting shoot a bitten officer, then mistake Marky’s arm injury for a bite; Kelly takes the dead officer’s gun, shoots the surviving policeman in the leg, and leaves him as zombies descend. Back at the house, Angel turns; Grayson is mortally wounded and reanimates, and Joplin and Veronica kill him. Kelly returns and puts Angel down. Riq later discovers the
Big Brother live feed is still broadcasting on
E4 and sees Kelly on screen. Believing the Big Brother house offers his best chance of safety, he and Alex travel by river; at a
lock, Alex is bitten and forces Riq to kill her before she turns, and he continues alone. Patrick and Pippa kill zombie Davina and reach the control room, where Patrick uses the PA system to contact the housemates and guide them into the house. He insists on attempting to reach the coast, but Kelly shows him the horde massed at the compound gates. Patrick proposes using Grayson’s remains as bait to reach the van, dividing the group. When Riq arrives, Marky—armed with an assault rifle—nearly shoots him until Kelly recognises him. Riq warns that Patrick’s plan is futile; the housemates restrain Patrick, but he exploits Diary Room secrets and public perception to manipulate Joplin, takes Kelly hostage, and forces the group outside with the bait. The bait is dropped during a struggle, Patrick fatally shoots Riq, and Joplin opens the gates in desperation, allowing the undead to flood the compound. Joplin is devoured and Patrick is torn apart as the survivors scramble back toward the house. Space retreats to the control room and coordinates defence over the PA, but is bitten while unlocking the Diary Room as the house is overrun. Kelly reaches the Diary Room as Marky and Veronica are killed, and Space sees Pippa among the undead. Kelly urges Space to open the exterior door so she can fight her way to the van; he reluctantly complies. The next morning, the surviving characters have reanimated, and the
Big Brother live feed broadcasts zombie Kelly’s vacant stare across televisions in the UK. ==Cast==