Bai Ran, whose soul has returned to another world, brings with her the medical arts and alchemy skills she learned in her previous life. After awakening the Heaven-Slaying Secret Realm, she purifies her marrow and grows stronger. Facing the hypocritical oppression of her half-sister and the prejudices of others, she refuses to rely on violence and cruelty, instead upholding her principles while protecting herself and fighting back. She also retains the compassionate heart of a healer, trading her medical skills for opportunities at an auction. As she unravels the mystery of her own destiny, she relies on her strength to break through worldly prejudices and forge an independent path of cultivation.