It is a special honour when Max and Marty Mitchell are invited as guests to the annual tribal gathering in the village of Tumbling Waters. Native Americans from hundreds of miles away have traveled to the beautiful community to celebrate their rich and varied heritage. And to play their famous lacrosse tournament! As the boys are about to discover, however, it is not all fun and games. In a friendly athletic contest Max and Marty slip from a rope bridge when the rope snaps. But was it an accident? Max and Marty-with the help of their friend Sammy Red Fox-are on the trail of another mystery! Don't miss other exciting Mitchell Brother adventures!