Golden Hamster demon Marnie is bound to the Destiny Saint Eradication System to become the Lord of All Monsters. However, she has innate good fortune: every time she intentionally commits evil, it accidentally turns into a world-saving good deed. She tries to collude with demons, only to purify creatures and subdue the Demon Lord. Eventually, demon beasts' faith binds her as the Heavenly Dao of All Spirits, forever unable to realize her dream of becoming the evil lord.