Meg Pero has been assisting her photographer father since she was big enough to carry his equipment, so when he dies she is determined to take over his profession--starting with fulfilling the contract he signed to serve on an Army survey of the North Rim of the Grand Canyon in 1871. What she doesn't realize is that the leader of the expedition is none other than the man she once refused to marry.

Captain Ben Coleridge would like nothing more than to leave without the woman who broke his heart, but he refuses to wait even one more day to get started. This survey is a screen for another, more personal mission, one he cannot share with any member of his team.

As dangers arise from all sides, including within the survey party, Meg and Ben must work together to stay alive, fulfill their duties, and, just maybe, rekindle a love that neither had completely left behind.