Su Wanqing, a female sword cultivator in the golden elixir period, has been experiencing frequent strange things since she picked up half a mysterious jade pendant three years ago - the sword wound on her ankle has not healed for a long time, the broken star sword often loses control, and she always suffers from inexplicable heart palpitations at three o'clock in the morning. There was something strange happening in the Sutra Pavilion late at night. She broke through the outer gate servant "Lin Shitou" and opened the secret door. He actually held the other half of the jade pendant and revealed her hiding place with a strange smile.
Behind the secret door is a secret passage leading to the "Soul Locking Prison". The person pretending to be Lin Shitou is actually Shen Cong'an, the law enforcement elder who disappeared ten years ago. He revealed a shocking secret: the giant bronze coffin contained the remnant soul of Su Wanqing's father, Su Changfeng, and the seventy-two resentments of the world of cultivation sealed by his soul. The Star-Shattering Sword was originally a "lock" to suppress the resentments, and the Su family bloodline was the only successor to the coffin keeper.
As the truth is revealed, reflections in bronze mirrors, visions of blood pools, and screams of sword spirits follow one after another. Su Wanqing discovers that her fate has long been entangled in "sword debt" - the resentment left by her father needs to be repaid with her blood. The strange figure with black eyes in the mirror, the vertical ruby pupil opened on the hilt of the sword, and the dark eyes of the remaining soul in the coffin all hint at a conspiracy that spans twelve years. She must find out the truth about her father's annihilation of the family and her forgotten past before she is swallowed up by resentment. But every time she gets close to the answer, there will always be a weirder reversal: a dead boy, an out-of-control sword, an elder who seems like an enemy but also like a friend... Every step is on the edge of reality and reality, and deep in the Soul Locking Prison, there seems to be a more terrifying existence waiting for her.