Mitch (Sean Astin), takes the family speedboat for what appears to be a boating outing on Lake Michigan but suddenly collides with the wreckage of a light aircraft. It knocks off his propeller and he finds himself stranded in the midst of the vast body of water. As the tiny boat drifts helplessly, Mitch discovers Kelly (Chris Mulkey), the plane’s pilot, still clinging to the debris, and pulls the severely injured man out of the water. But instead of being grateful, Kelly is angry and suspicious, brandishing a knife and aggressively protecting a mysterious backpack. Out of mobile phone range and taking on water, it becomes apparent that Kelly was on a shady mission and that his dangerous employers will be unhappy that he hasn’t kept to his rendezvous. However, as they struggle for survival, the real reasons for Mitch’s presence on the lake that day slowly surface...