In late 1969, Billy Covington (Robert Downey Jr.) works as a helicopter traffic pilot for a Los Angeles radio station. When he breaks several safety regulations by flying low, the U.S. Federal Aviation Administration suspends his pilot's license. However, his piloting skills, bravery and disregard for the law are noticed by a mysterious government agent, who tells Billy that he can get his license back if he accepts a job in Kingdom of Laos, working for a "strictly civilian" company called Air America. It is readily apparent that Air America is a front for CIA operations in Laos.