As the film begins, Russia’s Sputnik is flying through the air. Something about Sputnik, the mechanics, the possibilities, stirs ambition in young Homer (Jake Gyllenhaal). Seeing as he’s not going to get an athletic scholarship (that’s for his older brother), he decides that this rocket business may just be his ticket out of town. So he recruits running buddies Roy Lee (William Lee Scott) and O’Dell (Chad Lindberg), and even befriends the school’s biggest geek, Quentin (Chris Owen) to help him.

Homer’s father John (Chris Cooper) has other ideas. As supervisor of the mines, he sees the future under the ground rather than in the skies. His toughness, that part of him that makes him willing to risk his life for his men when the mine walls get shaky, makes him both a hero and an ogre. He believes in hard work, but on his own terms. That the boys devote hours of studying to make their rocket work, that they walk eight miles to and from their launch site, is frivolous to John.

Also choosing sides are the boys’ teacher Miss Riley (Laura Dern), who encourages them, and the school’s Principal Turner (Memphian Chris Ellis, obviously under contract to be in all period films about rockets), who is scornful of the project.

A number of rockets go up and explode or threaten to behead bystanders. There’s a forest fire and arrests. The coal miners strike, a mine collapses, illness enters the picture, and a number of other events promise to ruin the boys’ chances at an upcoming science fair.