On a night of torrential rain, Wang Qingqing, a disciple of Qingyun Temple, wielded a talisman like a sword and saved Ding Yunjie, a young man bearing demonic energy. She was a cultivation prodigy whose master had deliberately suppressed her powers; an old scar between her brows concealed a past struggle to the death with a mountain spirit. He was the orphaned son of a Cangming Martial Saint, carrying the burden of revenge for his father's murder and his mother's abduction. The words "No Regrets" were carved into his long sword. Through a turbulent age of displacement, the two saved the people and cut down their inner demons. The road to immortality stretched far, but their chivalrous spirits would not fade. The karma that began with their meeting in the rain would ultimately reveal, in a flash of swordlight, the most blazing stirrings of the heart amid the flames of worldly tribulation.