Running from a flood of trouble...

Zack Pruitt is a river guide long on skill but short on nerve: he dropped out of college, quit his job, and abandoned his girlfriend and young son when things got tough. Back in the Sierra Nevada, Zack signs on for a high-water river trip with three other guides and eleven clients. As the flotilla careens toward Gallows—a brutal rapid that's always terrorized him—events spin out of control. A near-fatal accident coupled with a rush of snowmelt leave the guides and clients fighting for survival, and Zack discovers that for once running is not an option.