When they were young, their childhood sweethearts had an indissoluble feud because of the sect. They killed each other many times to get the martial arts secrets, but Yu Yan's senior sister secretly fell in love with Yin Yan. During a fight, Yu Yan stabbed Yin Yan, and the teacher Sister Zixin blocked the sword with her body, and then Yin Yan took Zixin out of the world and married Zixin as his wife against the canon. At the moment of worship, Zixin closed her eyes forever, and the secret book was taken by Ziyanyun Pavilion as her own. However, Yu Yan's identity is very different, and she and Yin Yan got back together after a chance encounter...