A tsunami strikes a small island in the Pacific Ocean, leaving destruction and utter madness in its wake. After the natural disaster, CDC epidemiologist Dr. Madeline Hamilton and her fiancé, FBI operative Quinn Traynor, go to Nalowale Island to investigate a deadly outbreak of unknown origin. Victims become aggressive and irrational, suffering from insomnia, hallucinations, and eventual death. But not everyone cooperates with the agents’ efforts to save lives. Devon Wheeler’s fortune depends on completing construction of the Azure Cove Resort. He’s hiding something, and he’ll do whatever it takes to open the luxury complex on time, even if it means concealing critical information related to the outbreak. When all communications to and from the island shut down and the wave of illness climbs toward a calamitous crash, Madeline uncovers something terrifying…and impossible. Under quarantine conditions and without the help of modern equipment, Madeline and Quinn must make sense of a bizarre outbreak that will forever change the world’s understanding of viral pathogens. With time running out, their knowledge may come at an incredible price.