This character drama follows the exploits of an aged oil seeker, known only as Mr. Cox, as he roams across Texas in search of black gold. He has a special gift for it and has helped many wildcatters strike it rich. Unfortunately, he has yet to find his own gusher. In 1935, Cox has only a suitcase and a cat to his name. During a tremendous windstorm, he is forced to seek shelter in a farmhouse, owned by Don and Cora Day. The Days have three daughters and must scramble to eke out a meager existence on their dusty farm, located near the town of Henrietta. While there, Mr. Cox begins getting that old feeling that tells him that there is a lot of oil on the Day's farm. They think he is plumb loco and ask him to leave, but Cox wants to find out if it is true. He goes to an old friend, Big Dave, who thanks to Cox, has become an oil tycoon, to help him do some test drilling, but Big Dave has a short memory and brushes Cox off as a "hopeless loser." The determined Cox then devises a scheme to force Big Dave to provide him with financial backing.