Dewey and Grandma are alone in the cabin on Trouble River. Before he left, Dewey's dad told them they would be safe... but Grandma feels in her bones that they are not. And when Dewey sees an Indian sneaking behind the cabin, Grandma says, "There's never just one Indian!" Then Dewey knows they have to leave--fast!
Dewey and Grandma make a quick escape on Dewey's handmade raft. Trouble River's name is no joke, and they are threatened by rocks and currents and wolves that attack in the night. Still they go on, past the burned-out ruins of their neighbors' homestead, until they reach the whirling rapids. Now Dewey and Grandma face real danger, and they have to fight for their lives!