Bottom-tier mercenary Changsheng accidentally falls into a fissure in Qingping Mountain, subdues the blood demon sword "Chiling", and unlocks an exclusive ink-wash domain—upgrading all the way from a dilapidated courtyard to a palatial starry river. He manages to tame classic beasts from the Classic of Mountains and Seas, slaps down immortal pursuers, and stirs up the pattern of both the immortal and demonic realms, little knowing that he is actually a "discarded bug" of an ancient immortal-cultivation system. Everyone in the world seeks to ascend and become an immortal, not knowing that this is merely an energy harvesting scheme deployed by an alien civilization. Wielding his magic sword and shouldering a machine gun, Changsheng overturns the rules all the way from the bottom tier, tearing open the ultimate truth of the world.