Due to the dam construction of the power plant, the Kahuwasi River is about to disappear into a lake area. Louis (Bert Reynolds Burt Reynolds), Eddard (John Watt Jon Voight), Bobby (Ned Bhatti Ned Beatty) and Drew (Ronnie Cox Ronny Cox) are four adventurous and nature-loving friends who plan to go rafting on the Cahuwasi River over the weekend. The four men found a guide in a depressed town that was about to become a lake district, and finally reached the river bank. After simple preparation, they began their adventure. The next morning, Eddard, who tried to hunt, found nothing, bored in front of the strong and agile Louis, and went into the river with fat Bobby, but they met two strangers with guns, who controlled them and insulted them. Louis arrived and killed the stranger. Four people hurriedly fled the place, at this time, the river became ferocious, rapids and rocks were deadly everywhere, and an adventure became a deadly journey.