A young man unearths an ancient sealed tomb, awakening his eldest sister, who has slept for three years. Everyone believes she died long ago, unaware that his eldest sister, dressed in red, has returned to the world in a skeletal body. In the past, her family's neglect, her grandmother's favoritism, and her parents' cowardice drove her to the brink of despair and into a long slumber. Now that she has returned, the young man is her only weakness. She sheds her former tenderness and, wielding formidable immortal powers, confronts her cold-blooded clan and settles every debt from the past. With the young man by her side, protecting his eldest sister who has awakened from her grave, an entangled tale of grudges and grievances begins. Watch as the skeletal-clad elder sister and her younger brother shatter the world's injustices and carve out a righteous path of their own in the world of immortal cultivation.