Su Chen, who transmigrated to the high-martial Blue Star, waits on his eighteenth day for the marriage bureau matching, getting to know Long Luor, a maiden of the divine dragon clan, and becoming husband and wife with her. Just as gods attack the city, Su Chen awakens the unique god-slaying vocation, borrowing the power of the primal generation to slay demon gods. The God-Slaying Golden Book endows him with the transition ability, allowing him to draw various divine vocations and also subdue guilty gods. The two join hands to fight against alien races and remaining forces of gods such as double phantoms and mirage demons. Su Chen joins the Night Watchers, striving in cultivation to elevate his strength, determined to grow strong to protect Long Luor, walking side by side in a peril-ridden world.