Their friendship is forged on the football field and in the forests, through boyhood pranks and predicaments. Inseparable since their fistfight on the grade school playground, Gunner and Ronin are known as the Siamese Twins by the small town of Oak Hills. When Ronin loses his mother to a drunk driver, Gunner comforts him. When Gunner is attacked by a mountain lion, Ronin rescues him. Yet they couldn't be more different. Gunner is a goofy white boy Ronin is a confident Native American. Gunner is tall and strong Ronin is short and quick. Gunner loves his classic truck Ronin loves his horse. Gunner is a teddy bear Ronin is a risk-taker. During the summer preceding their senior year of high school, the seventeen-year-old boys embark on a 5-day canoeing adventure to grow a few chest hairs. On the final day of their voyage, they see a girl floating on an inner tube toward a treacherous waterfall. They react with their water rescue training. Gunner grabs the rope and Ronin the lifejacket. The