In a continent where cultivator was living a sudden catastrophe strike, a zombie apocalypse.
The zombies can grow and evolved over time. our main character flynn, survived for about 6 years and before he died he undercover the truth about the apocalypse.
But then... he goes back to 6years ago and there is only a month until the catastrophe arrive.
With the help of the world system can he master every single weapons and also become a legendary blacksmith.