Maria Connolly swaps her hospital in Preston, Lancashire for the Hospital General in Ciudad Juarez, Mexico. She encounters a community terrorized by a drugs war as cartels battle to control the lucrative border into the United States, and discovers that her new colleagues witness violent crime every day in a city with one of the highest murder rates in the world.

Dairy farmer Richard Gibson is swapping the damp surroundings of Devon, England to live and work with Samburu tribesmen, who herd their cattle in the parched and desolate mountains of northern Kenya.