Amid the rugged hills of southern Mexico, Felicia and Joan arrive bearing an unusual device for a prospector with a secret - one that could lead to a major mineral discovery, or sabotage. When a stolen map, a face at the window, glowing ore, and a mysterious campfire in the desert reveal the gravity of the situation, she must rely on her courage - and her unshakable trust in God - to solve the mystery and stay one step ahead of those who would do anything to claim the prize.