In the aftermath of a virus that has obliterated ninety-three percent of the population, Pollen McRae, a young woman plagued with a tragic past, finds herself scarred and abandoned in the wilderness, unable to remember the previous weeks. There she meets Marcus, a mysterious man with a similar plight. Together they are determined to escape a trio of bounty hunters and rescue Pollen's niece, Evie from her imprisonment at the Crimson Survivor Refuge, a refugee camp which serves as a cover for a much more sinister plot.

Meanwhile, a renegade environmental organization is recruiting survivors for a mission that will change the course of human existence forever.