Wow! For an actor barely ten years old, this is a masterful performance from Sofía Otero. It's a complex family drama that deals with relationships and identity in a delicate yet potent fashion as a mother "Ane" (Patricia López Arnaiz) leaves her busy husband "Gorka" (Martxelo Rubio) behind and takes their three children on a trip to see her family. Outwardly, they are a normal enough family unit - they have a few financial worries and at times relationships can be a bit strained, but as we get to now them all a bit better, we discover that Otero's character - a young boy ("Aitor") by birth but not by nature is seeking the confidence internally and from those surrounding to truly become "Lucia". Of course this causes consternation amongst the loving, but confused, parents and family at large - apart from her pragmatic and affectionate, beekeeping, great aunt "Lourdes" (Ane Gabarain), who seems to appreciate that the choices being made now by the youngster are visceral and innate. The story allows us to come to our own conclusions about how we might deal with this scenario were we ever to face it - as a child, as a parent, as an extended family member - and, rather effectively here, as a best friend. It has an innocence to it and a poignancy that this young actor encapsulates skilfully and engagingly. Arnaiz, Gabarain and Itziar Lazkano as the grandmother "Lita" all add depth to the characterisations and the narrative here too. It can be a bit on the slow side at times, but somehow that doesn't detract too much from the considered style of storytelling going on here. It's thought-provoking and well worth a watch.