Una hermana para tres hermanos is a choral situation comedy, written and directed by Álvaro Carrero, which deals with the family in its encounters and misunderstandings.

The characters, brothers and sisters, will have to solve the enigma and the problems that arise after the death of their father: a millionaire inheritance that causes sparks to fly and the appearance of a secret sister, who will put in check the distribution of the fortune they were to inherit. With these elements, the characters will be involved in a tug of war that will lead them to extreme situations.