Professor Jonah Mulray (John Simm)'s life is turned upside-down when his wife, Megan (Dervla Kirwan), is killed in a car crash in Hong Kong. Although she lived and worked there half her life, Jonah has never been. He lives a small, sheltered life, and his fear of flying has kept him in London. But now he has no choice but to travel to the other side of the world to identify the body of the woman he loved. Not long after arriving in Hong Kong, Jonah makes a shocking discovery about his wife. Jonah is drawn deeper and deeper into a web of conspiracy as he comes to terms with this utterly alien and unfamiliar environment, battling to uncover the truth about his wife's death.