"To us, a rare disease is like a quiz from God. A quiz from God that keeps us humans from being too proud and arrogant...
It's something that's left for us to solve..."
The drama deals with criminal cases and rare diseases such as porphyria, phenylketonuria and muscular dystrophy. Mysterious deaths connected to unknown symptoms and illnesses - these unsolved and inconclusive cases head straight to Dr. Han's office, the nation's top medical examiner.