Dr. Wong Po Fun (Cheung Ka Fai, Nick) joins “Life Force”, an international medical humanitarian organization, to carry out the unfulfilled wish of his deceased girlfriend, Tung (Leung Wing Kei, Gigi). He also sets up “Lung Shing Medical Centre” to help the poor.

When Fun is working with the organization in Kenya, he meets a young doctor called Chai Pak Hang (Lam, Raymond), who works at a private hospital named “Ling Siu” in Hong Kong. Influenced by Fun, Hang joins “Lung Shing” later. Hong Kiu (Kwok, Sonija), a nurse at “Ling Siu”, is impressed by Fun by his principle of putting patients first. However, Fun cannot get over Tung. Meanwhile, Hang meets a volunteer Ha Hiu Ching (Tong, Leila) when he is in Africa and likes her very much. When they meet at “Lung Shing” again, Ching hangs back because of the existence of Go Siu Yau (Chan Man Chi, Sharon) , who comes from a wealthy family.

Working with Fun at both “Lung Shing” and “Life Force”, Hang learns that apart from giving patients medical treatments, doctors should also help patients to live a meaningful life. However, when Hang and Fun face their own lifetime challenges, they feel weak and helpless.