Acacias 38 takes us to 1899 to narrate the story of a group of maids and the bourgeois families for whom they work. A story about the wealthy and the poor that reflects the meeting of two worlds in a singular space: a doorway to Acacias 38. This building in a bourgeois neighborhood of a Spanish city is the setting for the adventures of the different characters: the Serna family, the Álvarez- Hermoso, the Hidalgo, the Palacios, their maids and their neighbors.