[1][2] Set in Madrid in 2019,[3] the plot sees a psychotic character using comics and superheroes' origin stories to kill people and leaves a mark.

Attempting to stop this is Inspector David, a man who feels comics are for overgrown adults and quickly pays the price for that sort of criticism.

When Cosme realizes the demented villain commits murders in the form of creating superhero origin stories, he feels Jorge is better suited to work the case with David.

With time running out for the trio to find the killer, they face pressure as the news goes public.

Bruguera, the forensic man in the department, is eventually revealed to be the killer and the rest of the story follows the trio attempting to put an end to his nefarious plans.