The Three Wise Men, fed up with Santa taking more and more prominence from them, have decided to confront each other without knowing that this war will awaken a much more dangerous common enemy, the Krampus, who had been inactive for centuries.

It's New Year's Eve in Medarcos, a small town in the mountains of Madrid, inhospitable and frozen. Roma is 9 years old and her favorite place is the lap of her father, Rodolfo. But the atmosphere is rarefied after her mother has decided not to spend the holidays with her father's family. When Roma dresses up as a boy to sing in the middle of the family celebration, she discovers her father's intolerance. Nothing will be the same.

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 Soto Alto football team, formed by Pakete and his friends, is at risk of being kicked out of the league. Thanks to a scam by a property development company, they’ve lost their pitch and now Los Justos, the team from a local reform school, looks set to take their place.

Rosa Martín, a singer-songwriter known as La Ahorcada, takes her own life in the garden of the man she loved, Fran, who treated her as nothing more than a sexual object. The ghost of La Ahorcada remains in Fran's mansion, refusing to be ignored and determined to teach him a lesson. Her obsession will end up turning the lives of Fran and his family into a living hell.