El Reventón(1977)

Wild-partying hippie-artist-dilettantes end up forming a revolutionary terrorist cell. The misfit Gato loses a lot of money in bets and his father throws him out of his house. Ál leaves his girlfriend Laura for his lover, the married Adriana. Out of money Gato and Ál becomes urban guerrilla when they plan to kidnap Gato's rich father.