The story begins with a bizarre fire in the Tianji Pavilion. The attic containing the ancient secret book "Taiyin Sutra" was burned to the ground. The only survivor, Lu Xiaohanxue, was seriously injured. His left eye was burned but he could unexpectedly see the ghosts of the past. The fragments of the secret book appeared in his right eye, becoming a "living key" for all forces to compete for. The rebellious swordsman Tang Long swore to follow him with a broken sword because of an old promise, and he would protect everything he touched. The forbearing counselor Long Yixing was forced to track down the secret book for his family, but in his dealings with Lu Xiaohanxue, the peach blossom knot of the sword was tied and untied for her.
The three people are connected in fate due to the "twin bones", and if one loses, both will suffer. From the first encounter at Wangyue Platform to the exploration of the Tianji Pavilion ruins, from the embarrassed escape of being hunted to the active counterattack, in the burning ancient books, broken jade pendants, and blood-stained swords, they gradually uncovered the tampered history behind the "Taiyin Sutra" - the so-called "Taiyin Tribulation" is not a catastrophe determined by fate, but a man-made conspiracy. The memory of the wronged soul in Lu Xiaohanxue's left eye, the imprint of Tang Long's broken sword in his past life, and the secret words of Long Yixing's sword spike have all become the key to breaking the situation.
When the truth points to the "Sutra Burning Case" a hundred years ago, the three finally understand that "bearing all the grievances" is to "reveal the yin and yang". Fate is never a shackles, but the courage to choose. In the end, they used the fate of the "twin bones" as a guide to reverse the so-called "catastrophe" and let the hidden history be revealed.
