Luke's brother Robert always took chances on the river. He would jump the fastest current or climb the steepest boulder while Luke and his friends watched from shore. But ever since one of those stunts led to to Robert's death, nothing has been the same. Luke's parents can't seem to get along, they constantly warn him to be careful, and Luke's friend Milo is now the one being a daredevil -- and he challenges Luke to be the same. With river adventures...