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.

A story of a family whose father tries by all means to maintain the strictest ethics and morality ... or at least appear so. His beautiful young daughter tries to emancipate hereself and looks for a job, but the chance is that the first thing that comes out is underwear seller. She starts to work and problems start for all.

A young man from the gentry rejects all the values his family upholds while they rejects his own; so that, despite his efforts to please and the fact that he works in the family business, he ends up finding out that his uptight and competent brother calls him useless and effeminate.

When their beloved boss is ousted for a tyrannical one, a group of bank employees plot to rob the bank themselves.

In a police station in Madrid, four married couples receive shocking news.

In a sector of Madrid inhabited by families of a well-off class, a gang of boys and girls has continuous fun, sleep and drink, while their parents ignore practically everything. However, each of these young people has, to a greater or lesser degree, a problem. The parties and parties enjoyed by a group of young people from the upper class are the basis of the story that explains this film. Among them we find the famous couple, once happy, formed by Carlos Larrañaga and María Luisa Merlo. Directed by Fernando Palacios, and with a script by Rafael J. Salvia and Pedro Masó, " It's always Sunday " has no greater intention than entertainment, despite giving history a certain sociological touch, for that of valuing the behavior of the Youth of the time.

A rainy day forces Joaquin, Joe Luis and Alvaro to refuge in Martins' house. They also go there two Swedish girls who want love and spanish ham; a nun with hobbies of racing driver; a fat priest; a policeman unable to establish order; and the father of Joaquin, a fortune hunter. In the chaos that is triggered, the five young people discover their common love for music and they form a band.

Three men, one scorching Madrid summer, and wildly different escape plans. Evaristo braves the beach chaos with his wife Filomena, dreaming of peace amid tortilla brawls and crowded sands. Máximo retreats to the mountains with his entire clan—mother-in-law included—hoping nature will soothe the family storm. Meanwhile, Jacinto, a gym owner turned solo “rodríguez,” stays behind in the city, savoring his freedom while the family suns in Benidorm.