- Twenty years ago, two pediatric interns had a falling out due to a surgical operation. As time passed, Fong Chung Yan has become a pediatric surgeon at the highly prestigious Princess Anne Hospital while Hui Kam Fung who believes in protecting life above all else works at a second-rate hospital. They meet again because of a liver transplant.
Chung Yan schemes to get Kam Fung to join him at Princess Anne Hospital. He also finds his former colleague, cardiothoracic surgeon Cheung Yi Sam. Mak Hoi Kei, 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 Chung Yan and Kam Fung to overcome the bad blood between them. At this time, specialist Man Pak Wui and intern Lin Cheuk Ying discover that a major medical error was committed during the operation twenty years ago. Everyone decides to uncover the truth.