In this comedy by Director Emilio Gomez Muriel, actress Nini Marshall plays a Spanish noblewoman who moved to Mexico City with her daughter, Carmina, (Sylvia Pinal), and husband Marquis Don Fabian de Castro. Although he died many years ago, this clever widow chooses not to tell her late husband's family back home. She does this so that she will continue to receive the stipend or pension that goes along with the title of Marquis. Dona Candida uses this money to keep their home in a well-to-do neighborhood and to maintain a rather comfortable lifestyle for herself and her lovely daughter. However, problems, (and comedic situations), arise after the Peralvillo-Cozumel Trucking Company builds a new terminal right outside the upper-crust family's front door. Although initially perturbed by the noise, clutter and crude behavior of the workers, Dona Candida quickly notices that the Lead Truck Driver could easily be mistaken for her deceased spouse, (while Carmina quietly takes a shine to Gilberto, his handsome, younger co-worker.) Making lemonade from lemons, this calculating widow soon concocts a plan to use this common man and his resemblance to the Marquis in order to obtain an additional inheritance from her husband's wealthy relatives in Gallecia, who have not seen the real Don Fabian in years. The class differences between Candida and the trucker, referred to as "el Bofes" (as played by Joaquim Pardave), and their attempts to deceive do not only serve to generate laughs.They also keep the widow and the would-be impostor so preoccupied that they both fail to notice the budding romance between young lovers Carmina and Gilberto.

This comedy starring actress Nini Marshall as Dona Candida, chronicles the exploits of a Spanish noblewoman who moved to Mexico City with her lovely daughter Carmina, (Sylvia Pinal) and her husband, Marquis Don Fabian de Castro. After he dies, the widow decides not to tell his wealthy family back in Spain so that she can still continue to collect the pension or stipend that comes with the title of Marquis. Instead, she deceitfully uses these funds to keep their home in a well-to-do neighborhood and to maintain a rather comfortable lifestyle for herself and her daughter. All goes well until problems (and comedic situations) arise, when the Peralvillo-Cozumel Truck Line builds a new terminal right outside of the mother and daughter's front door. At first, Dona Candida is completely annoyed by the noise, clutter and low-class antics of the drivers and workers at the terminal located so close to her long-time residence. However, she soon realizes that with a bit of coaching and some public appearances at the local hot-spot called the "Los Angeles Night Club" the Lead Truck Driver, (Joaquin Pardive), could pass for her husband. This way, Candida will be able to collect an additional inheritance from her dead spouse's Gallecian relatives, who obviously not seen Don Fabian in years. The would-be impostor agrees to the plan and his training begins in earnest, Comedy ensues when Dona Candida is on the dance floor and confronts a female club patron who was dancing with her "husband". Their efforts keep the pair so preoccupied that they fail to grasp that Carmina and a young trucker and friend to the boss named Gilberto (played by Pepe Del Rio), are now madly in love.