It's 2034. In 2029, the D Plague struck and killed half the world's population. Those who contracted the virus faced certain death and the disintegration of their bodies afterwards into dust. Unbeknownst to all but a handful of people left on Earth, one person contracted the D Plague and lived. Haunted by survivor's guilt, Aric Rodrigue gave up his dream of attending medical school in order to take over his parents' pharmaceutical company. He knows he's doing good work but can't escape persistent depression and loneliness. Then, he meets and falls in love with Chelsea Capra, a computer genius who suffered a traumatic brain injury in 2033 and remembers nothing of her previous life. All of the doctors who treated her after her accident have died or disappeared. The couple soon comes to the conclusion that their pasts are somehow linked. They become suspicious of CDC employees and the FBI agents supposedly protecting them. Only if Aric and Chelsea can outwit the masterminds of a plot to eliminate them will they be lucky enough to find lifelong happiness together and to understand the surprising hidden truths in their pasts that have led them to be targeted for assassination in their present.