Some boys are trapped on a desert island because of a plane crash. They are from a military school. There is a pilot with them, the father of one of the boys but he is in both a menatlly and physically unstable condition. He dies, and the boys have to survive by hunting for meat and killing pigs. Eventually they are split into 2 tribes, Jack's tribe and Ralph's tribe. Ralph has been elected chief of the island but most boys are in Jack (the lead hunter)'s tribe. Jack's tribe kill Piggy (the last remaining member of Ralph's tribe) and Ralph is alone. There is a big chase scene during which the boys set fire to the island. Ralph runs out into a clearing to discover a troupe of soldiers who saw the fire and have come to rescue them.