Amidst the turbulent times of mountains and seas where powerful demons run rampant, human life is like mustard seed. Shuoyue transmigrates and awakens the red and white twin devour Dao embryo, acting decisively and ruthlessly in execution. Wielding a blood-bone demonic sword, harboring a terrifyingly powerful flame dragon burst talisman, she teams up with the greedy and cunning little demon Qibao to venture out. Breaking through dangerous places and array destructions, sweeping through Langya city, and sacking the sect treasury, she instead draws four half-step Wu Zhu to set up a certain-death net. Trapped in a desperate situation, Shuoyue uses secret arts to seal the space, reversing the pattern of hunter and prey. When swords are drawn against each other, the great war that overturns the order of the human and demon realms officially begins.