On a rainy night, on the streets of Kyoto, middle-aged homeless man Yang Jingchen died tragically - the back of his head was penetrated by a wall nail. Before his death, he looked in the direction of the Yang family and made a wish to be reborn: if there is an afterlife, he must pay for the blood debt of the Yang family that has owed him all.
Yang Jingchen was originally the adopted son of the wealthy Yang family in Kyoto, and his father was the richest man Yang Chengyan. When Yang Yuhuai, the son of the richest man, returned to the family, he was instantly reduced from a "quasi-heir" to a marginalized person: his status plummeted and he was bullied everywhere. Even the seven sisters of the Yang family turned against him because of Yang Yuhuai's instigation. What is even more vicious is that Yang Yuhuai teamed up with Fu Shiqi, the daughter of the Fu family, to frame him for "intentional murder", causing him to spend ten years of humiliation in prison. After he was released from prison, he wanted to borrow money to survive from the Yang family, but Yang Yuhuai accidentally pushed him into a wall nail, and he ended up feeling resentful.
However, fate favored him, and Yang Jingchen was reincarnated back to the point where he was imprisoned in his previous life. In this life, he is no longer Yang Jingchen who is at the mercy of others, but "Xiao Shen" who has endured for ten years and encountered adventures in prison - it turns out that there are 107 masters he worshiped (either as hermits with special skills or as revenge thinkers) hidden in the prison. They may teach him killing techniques, or give him strategies to break the situation, helping him transform from a prisoner into a dormant falcon.
This time, he wants to overthrow the Yang family: save the masters from prison, expose Yang Yuhuai's conspiracy to the public, let the seven sisters see the hypocrisy, and make Yang Chengyan pay the price for his partiality. Rebirth is the beginning of the sword, and Xiao Shen's revenge has just begun.