After an encounter with a zombie, Riq meets lone armed survivor Alex. The pair team up and escape the zombies by hiding in an abandoned country house.

As Kelly and Marky hunt for medical supplies, the situation in the Big Brother house takes a sudden turn for the worse. Meanwhile, Patrick does something to appall Pippa. Riq and Alex make a startling discovery.

It’s a typical Friday night eviction on Big Brother. Except it’s not a typical evening; there are reports of disturbances and riots all over the country. BB Producer Patrick has just heard that the live show may be bumped for breaking news on the riots.

Patrick and Pippa make a desperate bid for freedom. Riq and Alex face unimaginable peril. Joplin thinks he’s worked out what’s happening. And the undead are still arriving...

As huge numbers of undead gather at the studio gates, Patrick, Kelly and the housemates are forced to make some agonizing decisions. Who will survive – and what will be left of them?