Twenty years ago, two pediatric interns had a falling out due to a surgical operation. As time passed, Kuang Cong Xin has become a pediatric surgeon at the highly prestigious Annie Hospital while Xu Gan Feng who believes in protecting life above all else works at a second-rate hospital. They meet again because of a liver transplant. Cong Xin schemes to get Gan Feng to join him at Annie Hospital. He also finds his former colleague, cardiothoracic surgeon Zhang Yi Xin. Mai Hai Qi who heads the surgery department aims to create the perfect team to pave the way for the construction of Hong Kong's first pediatric center. Helping young patients face life and death situations time and again enables Cong Xin and Gan Feng to overcome the bad blood between them. At this time, specialist Wen Bo Xi and intern Lian Zhuo Ying discover that a major medical error was committed during the operation twenty years ago. Everyone decides to uncover the truth.