Chen Mo was driven out of his adoptive father Zhao Dezhu's home at the age of eight and left to fend for himself on the streets. He survived by working as a mechanic and grew into a tough man. Fifteen years later, Zhao Dezhu, in the final stages of kidney failure, knelt outside the ICU and begged him to donate a kidney. Chen Mo had intended to look on coldly, but then his younger sister, Zhao Lijuan, told him that he was actually a biological member of the Zhao family, and that there had been more to his abandonment all those years ago. Liu Tiezhu produced an heirloom belonging to Chen Mo's biological father, Zhou Xue held back before the operation, and Zhao Lei stirred up trouble from the shadows. A kidney-donation deal tore open the wounds of two generations. As Chen Mo struggled between hatred and redemption, he ultimately discovered that the one most in need of healing was himself.