It's 1969, a suburban 18 year old boy joins the Navy to avoid being drafted into the Army and sent to Vietnam. The American public was ignorant about American River Rats serving on little riverboats in the Brown Water Navy. Wayne Truewell figures that since there is no such thing as a Viet Cong submarine, that he will be safe in the Navy aboard a sea faring ship. Through erroneous orders, the scared boy receives orders for the all volunteer Vietnam Riverboats that are rumored to have 70% causalities. GMGSN Truewell experiences the life threatening everyday routine aboard a 7 man Tango Boat, whose main objective is setting Night Ambush in Vietnam's Mekong Delta. The second enemy comes from within.