Dovetail Mysteries: The Lost Treasure is about two Christian women who set out to solve an old high school mystery. But when Sylvia, the fiancée of a friend of a brother in the Lord, goes missing, they set out to find out why. Things escalate when the two women are hunted by a sniper. Then the women go camping in the picturesque mountains of the Hebrides and meet up with two sisters in Christ and a midget couple. Sylvia makes things worse by getting into trouble with the local sheriff. Sylvia then states, "People tell stories about a man-eating plant that lives in a cave just like the one we are looking for, so for our own safety and peace of mind, I'd say we stop looking for the lost treasure, and for God's sake, move away from that cave!