An avian flu pandemic has killed off the human population except for 13 survivors who take shelter in an underground bunker. However, the bunker can only support 4 people long-term. The group must decide which 4 individuals will stay based on their skills and which 8 will be sacrificed so that resources last 2 years until the virus passes. They consider the occupations and abilities of each person to argue for who has the best chance of ensuring survival.