Former master and disciple, now sworn enemies. Lan Wangji, once a paragon of the righteous path, has fallen into the abyss of obsession and imprisoned his master, Wei Wuxian, in a dark chamber. In the flickering candlelight, the gentle Hanguang-Jun becomes a crazed hunter, binding him with the chains of love and tearing apart every moral code. "I want to become your cultivation partner, with Heaven and Earth as our witnesses." Their trembling, tattered robes intertwine as the bound immortal in black cries out in anguish against his wicked disciple. Is this forbidden love, defying the laws of Heaven, a poison of passion that has sunk into their bones, or the work of a sinister scheme?