Yin Wugui, a baked potato boy from Qingshi Town, looks ordinary but has the fate of being the 18th generation devil and will not live to be thirty years old. During the Duan Tianya battle, he was forced into a desperate situation by the six major sects. In a desperate move, he turned the leader of the righteous path, Ling Shuanghua, into the stunning woman Ling Xueyi. Since then, he has been slandered as the devil who brought disaster to the world, and embarked on a bumpy road to escape. On the way, he took in Su Lianyin, a fox girl from Qingqiu who lost her inner elixir, Xie Changyuan, a young ghost cultivator who was born in the Ten Thousand Ghost Cave, and Jiang Xiaolou, a child who was refined into a demon-slaying sword by magic and could only cry with the sound of the sword.
As the new leader, Ling Xueyi chased him with a sword. After several confrontations, she was shocked to discover the shocking truth - the devil she was chasing was the infant baby she had saved twenty-nine years ago. Guilt and unspeakable feelings quietly arise, and the pursuit gradually turns into a secret guard. When the monstrous behind-the-scenes story of Zhengdao hunting monsters and sacrificing mortals was revealed, Su Lianyin died heroically to protect everyone, and Jiang Xiaolou also volunteered to transform into a sword spirit to stand beside her.
Ling Xueyi's three-hundred-year belief in righteousness completely collapsed, and he resolutely wielded his sword to liquidate all his sins. Yin Wugui destroyed the world's great formation, burning all demon seeds and lives, leaving only the promise of reunion in three hundred years. For the next three hundred years, Ling Xueyi guarded the old locust tree and sweet potato stall in Qingshi Town, waiting impatiently. One day, the young man returns from his spring outing. The smell of potatoes is still there, and the old friends meet again. After all the vicissitudes of life, the two people finally stay together peacefully.
Purpose: Completely break the stereotype label of "righteousness is justice, demons are evil", criticize the sanctimonious and filthy nature of pseudo-righteousness that kills innocents and is driven by selfish desires, and points out that the so-called good and evil are never about sect and identity, but whether there is goodwill in the heart and whether to protect the weak.