Hydraulic Level Five (n.): A whitewater rapid classification indicating large waves, continuous rapids, large rocks and hazards, potential large drops, where precise maneuvering is required. Often characterized by "must make" moves, i.e. failure to execute a specific maneuver at a specific point may result in serious injury or death. Kaye is an extreme sports addict with a kind heart and an axe to grind with her childhood sweetheart and ex-husband, renowned writer Samuel Caulfield Cabral. While Samuel enjoys a celebrity life in New York, Kaye remains in their hometown of Lyons, Colorado, running her PR agency and chatting daily with Samuel's family, the beloved Cabrals-first-generation Mexican-Americans who have embraced Kaye as their own. But when Samuel returns home for his sister's wedding with a new love interest, stunning editor Caroline Ortega, the gloves are stripped off. Kaye is determined to unearth the reasons behind the death of their marriage and why two people who lived to love each other were driven apart, all leading to startling revelations about Samuel, about life, and about herself. She soon realizes that maneuvering the tumultuous waters of her relationship with Samuel will prove as dangerous as any outdoor adventure she might attempt...at least where her heart is concerned.