Adapted from William Butler’s 1961 novel “The Butterfly Revolution,” this film first appeared at a festival in Milan in October of 1986, before getting a brief run in American theaters about six to seven months afterward, and then quickly moving to home video. It's a youth thriller from the mid-eighties, blending the atmosphere of "Meatballs" with the social commentary found in “Lord of the Flies.” Though it isn’t a …