A swimming coach accidentally saves a woman who has caught the eye of a rich playboy. Several thugs drown him in the water, and he transmigrates into the body of a man who also jumped into the water to save someone, but had no experience whatsoever. He narrowly survives, only for the System to tell him that the spiritual qi revival is just ten days away. As the Spiritual Void descends, humanity faces being devoured by ferocious beasts. Just when he is in despair, he discovers that he can draw supernatural abilities and run simulations...
