A petty thief known as John Smith was arrested for fraudulent behaviour in 1877. He tricked women into thinking he was rich, then stole their belongings and vanished. His guilt was obvious.

In 1852, Adler and Adolf Beck's father died on an expedition to a glacier, and their lives separated. One became a respected climate scientist, one a successful opera singer touring the world. Or so he claimed. But both remained in touch, if only to share the mysterious voices only they could hear.

Charles Ramsey also has a twin. It is 2050, and Greg is a journalist reporting on the climate-change inspired conflicts around the world. When Charles is made redundant from his job as a profiler for the police and sent home with a new experimental chip in his head, he is urged by his brother to explore a little-known aspect of their family history.

All of these people are connected. All of their lives will intersect. And the climate of their world will keep on changing.