Battle in Heaven (2005)

In the bustling streets of Mexico City, Marcos, a working-class man, grapples with guilt after a botched kidnapping ends in tragedy. Confiding in Ana, his boss's daughter who leads a double life as a prostitute, Marcos seeks redemption amidst his turmoil. As his mental state deteriorates, he embarks on a journey of confession and self-punishment, culminating in a harrowing pilgrimage to find solace amid the chaos of his conscience.