Three working-class students, Samuel, Nadia, and Christian are receiving scholarships to study at Las Encinas, the most exclusive private school in Spain, from the construction company, which it is blamed for
their old school roof collapse possibly due to faulty construction. Most of the Las Encinas’ students don’t want these new students there, but Marina, the constructor’s daughter tries to make Samuel feel
welcome there, while Lu and Guzman try to make Nadia to keep secret what she has witnessed in the school’s showers. Christian who likes Carla who is in a relationship with Polo is lured to make love with Carla
while Polo is watching them. Also, at Marina’s party Samuel's brother Nano, fresh out of prison, punches Guzman in front of everyone while Nano was accusing Guzman's father of stealing money to preserve
their way of life. All these are the beginning which leads to the murder of a student in the school and the police are trying to figure out what has happened.
