Who Killed The Rowboat Man? Leisure times on the famous California Delta come to sudden halt for two young lovers at the sight of a dead body in a small cove alongside the San Joaquin. With some of their boating friends, they set out to ascertain whether it was an accident or murder that did the poor fellow in. During their search for answers they accidentally stumble onto a multitude of criminal activities running roughshod throughout the area. In what started out as an intriguing adventure, they quickly become targets of cutthroats and hit men as the vicious crime boss responsible for all this illegality learns of their interference and sends his henchmen out to quiet their ways. Armed with nothing but small boats and flare guns, the young, amateur detectives have no alternative but to outrun, outwit and out maneuver the killers in big boats with big guns as they fight for their very lives. Overcome with rage, the antagonists ram, sink and destroy each other and their boats during a never ending series of death-dealing confrontations that roar throughout the winding waterways of the startled river. To maintain the secrecy of their homicidal reign of kidnapping, torture, rape and murder, the criminals pursue their prey all the way across this otherwise pristine paradise right into the waiting arms of an action-packed finale. But now, let us go back and see how all this got started in the first place...