Outside the Drum Tower, the eldest apprentice of an old carpenter named Yi Dachuan, Yu Zhongsheng, and his granddaughter Yi Xiaochuan secretly fell in love. The jealous second apprentice Yin Dongyi played a trick on Yu Zhongsheng and tampered with the beams of the neighbor's house. Yu Zhongsheng was deceived and the child in the house died, and he was thrown into prison. Outside the prison, Yi Xiaochuan, who still loved Yu Zhongsheng in his heart, was forced to marry Yin Dongyi. When Yu Zhongsheng in prison heard the news, he was filled with grief and anger and vowed to take revenge...