Professional kayakers Rush Sturges and Evan Garcia return to familiar grounds as they take on the raging rapids along the Columbia River Gorge. Approaching the river, they instantly feel the freezing temperatures of the water. The fast-flowing river leads to a 30-foot waterfall. Evan explains that he is recovering from a serious rib injury; so, even though he is joining Rush, he doesn't know if he will want to risk dropping over the waterfall. They start to paddle down the river, battling the treacherous water and dodging logs and rock hazards in the way. Before reaching the 30-foot waterfall drop, they stop to discuss Evan's chances of hitting it. He decides to go for it with no hesitation.