An undertaker gets married to an old executioner's daughter and, although he doesn't like it, must continue the profession of his father-in-law after his retirement.

Three couples, three journeys, one life-changing moment. From newlyweds Alejandro and Mercedes to seasoned partners Margarita and Enrique, and hopeful dreamers Inés and Luis, each pair faces the joy, chaos, and wonder of expecting their first child. As cravings kick in, names are debated, and families react, their stories unfold with humor and heart. Different paths, different personalities—but when labor begins, every heartbeat races the same.

Andrés' parents, in Madrid, and Pierre's parents, in Paris, have agreed to a school exchange for their children during the summer. However, when they go to the station to pick up Pierre, 10 years old, they meet an attractive young woman who takes his place. The presence of Ivette is a shock to the family, especially for the older son, who is strongly attracted to the French.

Guillermo's family has been living for years a terrible curse. All the women in his family have died because of love and murdered by men of the clan. The funny thing is that before each death a cat appeared. One day, while Guillermo prepares the papers for his marriage with Beatriz, he discovers that both are distant relatives.

The imaginary city of Vetusta, a symbol of anachronistic and oppressive traditions, is the realm of hypocrisy and intolerance that makes Ana Ozores's life unbearable and inevitably tragic.

In order to solve economic problems, "Leguineche" family decide to move to France with their limited belongings.

After a vacation to a seaside resort, a Spanish mayor attempts to modify his small rural town for tourists in an attempt to make money.

Alfonso de Borbón and his cousin María de las Mercedes de Orleans fall in love and, although both families do not maintain good relationships, young people marry when Alfonso became king of Spain.