An ordinary social creature who died on the day the apocalypse came was reborn before the apocalypse with the memories of his previous life and the mysterious "Doomsday Mission System".
When the end of the world really comes and others are fleeing in panic, he is already completing tasks, collecting crystal cores, and building bases. But surviving is only the first step. When he discovers in the ruins that the spread of the virus is not a natural disaster, but someone deliberately doing it, his goal changes from "surviving" to "finding the truth."
