Nina is a 20 years old girl from Valladolid who lives with her divorced father, an autoritarian and conservative man. Trini is of the same age and has lost her mother. For both Valladolid and their families have nothing to offer and therefore they go on a risky voyage to the Costa del Sol at the south of Spain.

Students of the university of Salamanca are brutally murdered by a black masked minstrel. Alex, an architecture student who has recently moved to Salamanca discovers a pattern behind the killings; it seems as if the killer strikes regularly after the exams to free the campus from lousy students.