A fire in town causes widespread panic.
The residents of Chester's Mill wake up one morning to find themselves trapped inside a massive transparent dome which acts as a force field, with no way out and no way in.
Cut off from the rest of the world, they struggle to survive as resources rapidly dwindle and panic quickly escalates. Frightened and mystified, they also search in vain for answers about the dome – where it came from and if and when it will go away.
"What if the government built this thing?" asks one resident. "I doubt it," replies Dale 'Barbie' Barbara, who used to be a special agent, "Cos it works."