After thieves Braulio and Víctor rob one another on the street, a police officer follows them, but instead of arresting the criminals, he robs them.
When their father decides to move to Europe, Javier and Manolo's comfortable lives are threatened because neither one of them has learned to be self-reliant.
Biochemists Lourdes and Liliana work at a laboratory. One day, they steal a drug that has high levels of female hormones and give it to their oblivious husbands to force each of them to experience a day in the life of a woman.