In 2015 the people started to turn to be a zombie because of the virus going around and some doctors do not have enough information to make them back. Therefore most people who did not go to sanctuary became a zombie. The people who went hiding did not have news that most people are becoming a zombie. By the beginning of 2020, five million of people are already a zombie, but they do not eat food instead they eat people. People who had enough calories and energy were eaten by the zombie to make the zombie stronger and turn them into a zombie too. However, zombie usually does not need calories because they are already dead, but they need to be strong so they need to energize from their secondary consumer which is the people. In the trophic