Harvest Heat reveals how modern agriculture feeds hungry people. Something magical happens in 1950 during wheat harvest when one war veteran returns home. He struggles with civilian life after fighting from Utah Beach to Berlin. Despite horrible battle memories he gains new strength by keeping his promise to help starving people get food. He meets a young woman who teaches in a Kansas high school.

The Kansas moon's white light fires the passion of these young lovers. She helps him adjust to being home from the war. In the summer heat fueled by the aroma of ripening wheat their carnal love exposes her dark secret. He helps her fight the trauma of a brutal teenage attack.