Mountain climbing guide Samantha "Sam" Murphy likes to tout her safety record. In the ten years she has led climbers on excursions up the world's most treacherous peaks, she has never lost a client. But that doesn't mean she hasn't lost someone even more important.

Surgeon and philanthropist Olivia Bradshaw hires Sam's company to lead her handpicked team on a fundraising climb of Annapurna, the world's most dangerous mountain. For Olivia, for the donors who have pledged money to her charitable foundation, and for the underprivileged masses she is seeking to help, failure is not an option.

Secrets abound and danger lurks at every elevation. Will Olivia's attraction to taciturn Sam get in the way of the expedition's success or will Mother Nature have the final say?