Tuno Negro (Black Serenade) is a horror and mystery film set on a university campus in a college town; Salamanca.

Our story draws on the "Tuna" (student music group whose members dress up like medieval minstrels), an archaic element par excellence that has survived since the 13th century, and mixes it with something that is a modern, symbol of the future: Internet.

A psychopathic murderer infiltrated in the Tuna chooses his victims online. At night when the students are partying, the Black Tuno (Black Tuna member) commits his crimes. He is the final solution to the problem of overcrowded Spanish universities.

"This year you have a more important reason to pass your exams..."