Blue Star has entered an age of the extraordinary. All living things are evolving, and demonic beasts roam rampant.
Humanity awakens Star Souls through evolution, allowing them to fight back against the rampaging beasts.
Zhou Xuan, who does odd jobs at the Demon Suppression Tower, unexpectedly awakens an unscientific sign-in System.
He signs in on an ancient primordial beast and gains the power of the primordial chaos. He signs in on a weed spirit, and his Star Soul evolves into the Nine-Leaf Swordgrass.
A thousand-year-old black tortoise, a ten-thousand-year-old Sea King, an undying divine phoenix, and a sky-swallowing divine dragon all become targets for his sign-ins.
"Ding! Target detected: Heavenly Dao. Sign in?"
"Ding! You successfully signed in on the Heavenly Dao and obtained the laws of the Heavenly Dao."
Heavenly Dao: Huh? Should I just leave, then?
On that day, the Demon God awakens. Zhou Xuan wields a blade of grass as a sword, stunning the world with a single strike that reduces the Demon God to ashes.
