Some Time Later

Tiempo después is a movie starring Roberto Álamo, Blanca Suárez, and Iñaki Ardanaz. In a distant point of time, a man alters the world he knows when he tries to sell lemonade.
Planet Earth, 9177. The remains of humankind live in a post-apocalyptic environment divided into only two social classes: the ruling king and the oligarchs who inhabit the Representative Building and the poor of the world who hardly survive in the slums built around it.