Forbid, an airborne 'Outbreak' occur and people began turning into zombies, and or the animals become infected in the 'Zoo', then turn on humanity, or an "American Disaster" turn living human beings into a 'Walking Dead' known now as "Zombies" causing 'World War Z'.
Your (U R) "Entertaining" survival guide will make you think about your (U R) survival just incase the secrets hidden in entertainment actually occur.