No way does Greg feel in the mood for white-water rafting with his father and half-brother, James. Greg's father feels this trip will make Greg more adventurous and help him get over his fears. But the trip becomes a living nightmare when a rattlesnake bites Greg's father leaving him dangerously ill. There's no help nearby. Greg must take charge of the raft and pull together with James through the rough rapids. Every moment counts. They must save their father's life.