There's essentially a lot of this.
Spoiler alert: zombies.
Here's the backstory: The government has introduced a new 5G phone signal, but despite good speeds it accidentally mutates people's DNA.
Newspapers such as The Radiograph and The Moon freak out because people are turning into zombies like this:
These newspapers have nothing to do with The Telegraph and The Sun. NOTHING.
We then meet contestants locking themselves into a shopping centre, awaiting to follow instructions from Greg James and the army so they can survive.
Challenges include getting through very limited food rations, popping out to track down essential items to stay alive (such as bedding), and generally running away from zombies.