O Rei da Boca (1982)

"An empire of corruption and pleasure surrounded the king"

A humble farmer aspiring for richness leaves his land to become a prospector. He finds a precious gem and hides it from his employer, for which he ends up beaten and tortured. After being released, he kills the perpetrators and flees to the big city. There he finds some criminals who will end up transforming him into the most powerful drug dealer and pimp of the underworld.