Former smokejumper Steve "Merks" Mercer can no longer fight fires up close and personal, but he can still use his intimate knowledge of wildland burns as a spotter and drone specialist. Assigned to copilot a Firehawk with Carly, they take to the skies to battle the worst wildfire in decades and discover a terrorist threat hidden deep in the Oregon wilderness—but it's the heat between them that really sizzles.