In a poor neighborhood in Mexico City, two gangs of kids fight for control of the center where they work as "boleros", musicians or announcers. "Completo" joins the gang led by "Rorro", a rival of the group headed by "Curricán".
| Editing | Joseph Noriega | Editor |
| Sound | Gabriel García Moreno | Sound |
| Art | Teodoro Zapata | Art Direction |
| Directing | Guillermo Arcos | Assistant Director |
| Directing | Adela Sequeyro | Director |
| Writing | Adela Sequeyro | Writer |
| Production | Adela Sequeyro | Producer |
| Sound | Armando Rosales | Original Music Composer |
| Camera | Fred Mandel | Director of Photography |
| Art | Juan Tello | Set Decoration |
