A batch of fresh nursing school graduates are assigned to complete an internship at a hospital. Among the group, Kei Lok, Tang Lai Chin, and Yu Yuet Ngoi are assigned to what is known as the “hell ward”, managed by registered nurse Yeung Chi Ming. Chi Ming, also known as “Death Ray”, is famous in the hospital for his strange personality and mysterious background. In charge of training the interns assigned to the “hell ward”, Chi Ming is extremely competent and has a rich history of work experience.