After attending a medical conference in Beijing and coming frighteningly close to dying in a car crash, Dr Matthew Nolan, played by Armitage (Obsession, Stay Close) arrives home and is immediately arrested at London’s Heathrow Airport. Exhausted and confused, Nolan is accused of the murder of a woman who was in the car he crashed. DC Hana Li, played by Lusi, is the no-nonsense, London officer charged with accompanying Nolan back to Beijing, but plenty happens on the way.