In the sleepy tourist town of Plainsville, SD, the school year is almost over but there's still time for strange happenings like a mysterious stranger lurking around the long-abandoned Jackson house, and tribal artifacts being stolen from a local museum. Rinnah Two Feathers is sure something fishy is going on, so she and her friends, Tommy Red Hawk and Meagen Paige, set out to crack the mystery. Even though their investigations are hampered by final exams, schoolyard bullies, and meddling adults, the kids must be on to something it isn't long before they stumble across a hidden treasure map, find themselves in deadly danger, and discover the secret of Dead Man's Mine.
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