The witch Sheba's prophecy is like a riddle. A riddle Rowan must solve if he is to find out the secret of the Mountain and save his home. To the sturdy villagers of Rin, the boy Rowan is a timid weakling. The most disappointing child ever. Yet, incredibly, it is his help they need when the stream that flows from the top of the Mountain dries up. Without its water, their precious bukshah herds will die, and Rin will be doomed.