After losing her father at sea, young Marisol leaves Cádiz for Madrid, stepping into a household unraveling under the vanity of her aunt Leonor and the chaos of her spoiled cousins. With Javier facing jail, Churri chasing suitors, Jorge skipping studies, and little Pili lost in cinema dreams, Marisol takes it upon herself to restore order. Armed with grit, a loyal maid, and a friend from the train, she battles dysfunction and deception—earning Leonor’s scorn but fighting for a family worth saving.

Leandro, an unemployed mason and his friend, Tocho, attempt to rob a tobacconist in the Vallecas district of Madrid, but Mrs. Justa, the tobacconist, impedes it alerting the neighbors who notify police. Inside the shop, the confrontation between the two friends and their 'hostages', the tobacconist and her niece Angeles, is relaxing, and a budding sympathy arises between them.

Rodrigo Díaz de Vivar, “Mio Cid”, is in love with Jimena, but the Count of Oviedo, his father, challenges him to a duel and is killed. He before him curses Rodrigo, that if he marries Jimena, he will lose his manly faculties. And, in fact, when he gets married, Rodrigo becomes effeminate.

Juan and Carmen are a humble couple living in Madrid. She does the housework and he works as an electrician in a film studio. Their dreams of wellness come true when they win a contest sponsored by a soap brand.

In Madrid of the 20's, many women were hired as wet nurses for middle class families. Milk is paid very well, so women are turning to the honest services of Paco, glazier by trade, which completes his monthly salary getting pregnant the clients who pay for it.