A unique hospital ship offering life saving surgery sets sail for the poorest of the poor in Africa. They have just one year to do the impossible - to provide the care these people cannot get any other way. On board are volunteer doctors and nurses - now headed straight for the biggest medical and ethical challenges of their lives. Ahead lies unbelievable illnesses, many they have never seen outside of textbooks. A dramatic journey is underway as they deal with life and death cases and balance the fates of patients in their hands.