After reading in the newspaper, Úrsulo runs to seek employment. It is the position of caretaker of a luxury apartment building habited by people more heterogeneous: the professional model, the spiritualist, hippies and all turn to him to solve their problems. But someone in the building, kidnapped an important person and Úrsulo becomes a private investigator.
| Directing | Miguel M. Delgado | Director |
| Production | Jacques Gelman | Producer |
| Writing | Ramón Obón | Screenplay |
| Sound | Gonzalo Gavira | Sound Effects |
| Camera | Jorge Stahl Jr. | Director of Photography |
| Writing | Isaac Díaz Araiza | Writer |
| Sound | Gustavo César Carrión | Original Music Composer |
| Editing | Gloria Schoemann | Editor |
