Basque director Estibaliz Urresola Solaguren’s debut feature is a sunny drama. This wonderfully sensitive work is carried by heart-wrenching performances from newcomer Sofía Otero as the little girl in search of a name and Patricia López Arnaiz as her conflicted yet loving mother. But, just as a multitude of bees ensure nature’s diversity, supporting roles are no less essential for the film’s heroine, and a largely female environment shows her some of the diverse ways in which it is possible to be a woman. By adopting more than one point of view, Urresola is respecting the incredible complexity that is gender identity, and touching on one perhaps less obvious aspect of transitioning: your mentality.
Source: Berlinale
And some images from the final event, who Sofia Otero got a silver bear as best actres (she is now the youngest person who got a bear in the history of the Berlinale).

I give the movie 4 of 5 stars. I was a bit confused about the backround fact that it's going about a boy who would be a girl and it's played by a girl, but well, she's acting so good in her role, that she got a silver bear from an international jury in the competition (that was a real surprise!!!). Anyway, it's a lovley film with not so much surprises but a nice story and great selected characters. So you made nothing wrong to watch it, when it's out for public.