Above the desolation, awaken as light; draw as a blade, kill through the wilderness. In a wasteland world where viruses are raging and civilization has collapsed, mankind is clinging to the barrier and struggling to survive. 16-Year-old refugee Li Wu is one of the people struggling to survive outside the barrier. In order to survive, become stronger and explore the secrets of his life experience, Li Wu relied on the attributes and skills he obtained through lottery to save himself from danger in the dangerous wilderness: killing mutated beasts and fighting against the ferocious polluters.