Buck Enderly's life hasn't worked out the way he planned. He's a middle-aged house cleaner living with his mother, whom he must care for after she suffers a debilitating injury. When Buck takes on an eccentric new client, he gets roped into a side job locating her estranged son. With the help of his twenty-something neighbors, Buck tracks down the disturbed young man. But then in another twist of fate, he finds himself an accomplice to a violent crime. Now Buck must hide the truth from his...

Doctor Baines has been conducting genetic experiments on piranhas and has made them virtually unstoppable. Unfortunately, his assistants, Maggie and Paul, accidentally release the hybrids into the Lost River Lake threatening to destroy everyone in their path. Can they prevent the flesh-eating piranhas from escaping into the ocean and spawning?