Javi, a young rent boy living in Madrid, comes to a sauna club looking for a job. But soon he'll find out a place full of secrets, the biggest of them being a strange man who will fall in love with him: the Phantom of the Sauna.

　　Juan, a prison officer, silently observes the visit every Sunday of Berta, mother of one of the imates. The day he finally approaches her, he surprises himself by pretending to be another visiting father and inventing a daughter inside the jail: Josefina. The need to fill the vacuum of their lives prompts Juan and Berta to continue meeting outside the reality around them.

　　Euskadi 1985. El colegio ha terminado, por fin llegan las ansiadas vacaciones. Marcos y sus tres amigos, José Antonio, Paquito y Toni, reciben expectantes la llegada del verano, un verano prometedor sobre todo porque a sus doce años poco importa dónde, ni cuándo, ni cómo. Recorrerán las horas en el laberinto que la vida les ha deparado, en una Euskadi antigua, luchadora, convulsa. Un laberinto de paredes grafiteras, donde rebotan las pelotas de goma y los sueños de libertad; cubierto de un cielo gris prefabricado en cooperativas, donde la muerte y la vida ya no mantienen relaciones formales.

　　Flora and Victor are fun, modern, caring parents. That is, until they decide to get a divorce, and the perfect job opportunity turns up for them. They now have one problem: custody.

　　A portrait of the myth of maternity around the story of Pepa and her daughter, who are asked out of their home and forced to wander for a place to live with no support network.

　　Quién lo impide is a call to change our perception of adolescents and youths; our idea of those born in the early 21st century who have recently reached adulthood; those who now seem guilty of everything as they themselves see their hopes dashed. Somewhere between documentary, fiction and pure testimonial record, the young adolescents show themselves the way they really are, the way we rarely see them, or the way they let us see them: taking advantage of the film camera to show off the best of themselves and renew our trust in the future; from fragility and emotion, with humour, intelligence, beliefs and ideas. Because the young people who speak to us about love, friendship, politics or education refer not only to their own situation, but to the things that always matter to us, at any age. Quién lo impide is a film about ourselves: about what we were, what we are and what we will continue to be.