Thirteen-year-old Tepary discovers an old flute in a cliff dwelling in New Mexico, and through its power he learns about ancient Native American magic.
Despite some reservations, sixteen-year-old Jessie joins her companions from the previous year's adventure on the Colorado River for a legal rafting trip through the Grand Canyon.
When North Carolina fourteen-year-old Dylan Sands joins his fifteen-year-old cousin Rio in running the Rio Grande River, they face a tropical storm and a fugitive kidnapper.