The thirty-year friendship between brothers and sisters was completely shattered by a loan of 20,000 yuan. When Lao Zhang was paying back the money, Lao Lu suddenly fell ill and fell into a coma and became a vegetative state. In the chaos, money disappeared. The factory director called for debt, but Lao Li, who was responsible for collecting the money, denied receiving the repayment, causing Lao Zhang to die on the spot. His son Zhang Wuwei stabbed Li's family members in anger and was sentenced to eight years in prison. The Zhang family lost the lawsuit, the mother became blind, and the younger sister dropped out of school.
Six years later, Zhang Wuwei was released from prison with a reduced sentence and vowed to avenge his father. He witnessed the prosperous business of Lao Li's family, but his own family was ruined, and his girlfriend Gu Yu was about to marry Li Guoliang, the son of his enemy. Driven by revenge and anger, he continued to persecute the Li family. In order to protect his future and marriage, Li Guoliang directed and acted on his own many times (hiring people to smash up his own stall and causing attacks) to blame Zhang Wuwei, deepening the misunderstanding.
Zhang Wuwei started a business with the help of inmate Ouyang Zhengxiong, and fell in love with reporter Ouyang Zhiqi. After Gu Yu got married, he discovered that Li Guoliang was full of bad things (framing and cheating), and his marriage collapsed. At the same time, Guyu unexpectedly discovered that Zhang Wuwei and Li Guoliang might have been the wrong babies in the hospital back then. The secret of their bloodline shocked both families.
After Zhang Wuwei experienced the huge shock of revenge, loss of relatives, and the revelation of his life experience, he finally chose to let go of his hatred. He kept his promise to his sister, took care of his adoptive mother (Mother Zhang) who regained sight after going blind, and successfully founded the "Five Flavors Super Building", shifting his life goals to career and responsibility. The story ends with complex emotional entanglements and reconciliation in life, emphasizing that the true meaning of "one breath of life" lies in adhering to conscience, taking responsibility and moving forward with forgiveness.
