Hugo has lost the love of his life and he intends to get her back by learning to play the piano for a year. Nerea, his neighbor, will be the one to help him achieve it by giving piano lessons.
The Fuentes are not the best family in the world. But what family is it? Work, school and routine have plunged them into a spiral of disconnection that seems impossible to stop. However, everything changes when the youngest of the group, Valentina, makes a wish for her ninth birthday. The next day, all the members of the family wake up with their bodies swapped: The father is in his wife's body, the girl is trapped in the grandmother's body, the teenage twins are not themselves... Chaos takes over. the family and, desperate, they ask themselves: Who is who? While the family faces crazy situations and hilarious circumstances, the Fuentes must learn to get under each other's skin and trust each other to turn the situation around. Will they be able to return to their original bodies and get their lives back?
The eldest of the family, Sara, comes of age and brings chaos to the family by announcing her intention to marry Ocho. Javier and Marisa try to avoid it at all costs. At the same time Dani has an existential crisis, Paulita feels jealous of Cris, Carlota announces that she has found a boyfriend from a high society family and Rocio has finally managed to be cast in her first film.
A year ago, Ricardo and Felipe, in charge of taking the children to a camp, stayed outside the train leaving the children inside. Clara no longer trusts them and this year she decides to take the children personally with the help of her friend Susana. However, now they will be the ones who, as a result of an accident, are separated from the children.
Christmas is coming. The children accidentally break a Nativity scene figurine from their father's collection and must by all means get an equal one, the problem is that it is a unique antique piece. Sara, the eldest daughter breaks up with her boyfriend, Ocho, who will try to recover her favors with the help of her father-in-law, Javier. Precisely Javier's father-in-law, Marisa's father, will be welcomed into the family home to spend the holidays after her recent separation, which will not leave Javier's mother, Milagros, indifferent. Rocío, the folklore of the family, who has been playing the Virgin for several Christmases, is relegated this year to playing the shepherdess, something that her father, Javier, is not willing to assume.
Shortly after the outbreak of the Spanish Civil War, the Republic sent 3,000 children to Russia to protect domestic bombings. The first to leave were the children in the orphanages. Beatriz, daughter of a wealthy family of right, whose father and brother were Phalangists, became pregnant with a man who refused to marry her and decided to hide her son in an orphanage in Madrid. Upon learning of the impending trip to Russia child, steals the identity of a dead republican (Paula) and volunteers to babysit. Undertake and a terrible journey, surrounded by enemies, and thousands of miles from their country and their world. On June 41, Hitler invaded Russia. The continuous arrival of fresh troops for the defense of Moscow and again hinder the journey of the Spanish. At one of these stops are joined by Alvaro, a political commissar of the Communist Party of Spain.
In 1960, Martín and Marcos are forced by their difficult personal circumstances to travel to Switzerland in search of work, leaving their families in the Madrid of Franco's Spain. But they undertake more than a simple journey; they begin the road to a new life.
After an old soldier named Miguel de Cervantes (1547-1616) wrote the adventures of Don Quixote and Sancho Panza, the knight and his squire have become very popular. When he learns that the Turkish comes along the Mediterranean coast with a powerful army, Don Quixote will undertake, again opposed by his niece and his housekeeper, a new adventure that begins in La Mancha and ends on the coast.