A beautiful girl has an intense trip during which she transforms.

In Extremadura, Spain, Pascual Duarte, a humble, simple and ignorant peasant, condemned to a boring and humiliating existence with no future, commits a horrible act during a day of such heat that enervates his disturbed mind and his anger, which he will not be able to calm down until, after following a bloody path of senseless violence, he faces his own tragic destiny.