It's 1978 and the hottest summer of the century in Apulia, a village in southern Italy. The few adults that live in this desolate place have retreated inside their houses to escape the murderous heat. The only ones who dare to venture outside are the kids, who ride around on their bicycles in the midst of golden cornfields. When nine-year-old Michele comes across a boy shackled in a hole, he discovers that the entire town may be complicit in an evil ransom scheme.