Mexico, Friendly City (S)

Joaquin, "el Güerito" (Blondie), realizes that a gang is stealing his new car. As he tries to stop the robbery he detects that one of the gang members, el "Pelusa", was his secondary school classmate. He isn't able to stop them from stealing his car, but he accompanies them to a concert where they get into a fight with another gang the "Sexgremlins", Joaquin tries to stay out, but he finally gets pulled into a knife fight