Gu Shengyi is the only direct disciple of the miracle doctor Gu Yuan, and is known as the "Poison Doctor". In order to avenge the banker, he searched hard for the boy in his memory.
Jiang Guyu is a disciple of the Qingmen and a killer in the world. A few years ago, he followed the sect leader to kill twenty-one of the bankers, but when he was chasing Zhuang Yuxuan's young son who had fled, he let him go.
A few years later, the two met, and their grudges were entangled, and their love debts were repaid. Jiang Guyu became the hidden sword in his hand, a murderous knife.
In this drama called revenge, too many people are involved in it, and the cause and effect rotate, but no one can be immune...