The document describes a scenario where a flu virus has wiped out the global population except for 13 survivors who have taken shelter in an underground bunker. However, the bunker's resources are only enough to sustain 4 people for the 2 years needed to outlive the virus. The group decided to keep the scientist, army officer, doctor, and a botanist professor to make use of their skills. The scientist and army officer are male, while the doctor and botanist professor are female. The other 8 survivors - including a priest, addicted couple, pregnant woman, elderly woman, disabled person, lawyer, and welfare dependent - were deemed less useful and would be killed off.