In their fourth adventure together, Jake and his younger brother, Tommy, visit their grandparents' farm, Thunder Creek Ranch. When Jake spots a kid on the neighbor's farm, he goes over to investigate and meets Cory McNash, a city kid. Cory thinks he's tough and likes to brag. He offers Jake a ride on a quad bike, and Jake can't resist. When Cory leaves a gate open and a young calf chases Tommy over the creek and into the woods, Jake and Cory follow on the quad. There's a storm coming, and they soon discover why the trickle of water in the creek bed is called Thunder Creek. The boys are stranded, and the tiny creek in now a raging torrent too dangerous to cross

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