Madrid, 2019. A serial killer is spreading chaos. Anonymous people with no apparent connection are being murdered while imitating the first appearances of the most famous superheroes.

Heroes do not exist. David, a young policeman who has recently moved to Madrid, is forced to collaborate with Jorge Elías - an endearing freak and owner of a comic book shop - in order to solve a series of atrocious murders that recreate the secret origins of the classic superheroes. Each grotesque murder is a piece of a jigsaw puzzle that has the streets of Madrid as a backdrop, but whose complete image they are unable to distinguish. Jorge's encyclopedic knowledge about the comic world and the unexpected discovery of David's dark past will be fundamental in helping them solve the enigma hidden behind the awful crimes. The clues will guide them through the Spanish capital, along a labyrinth designed by a disturbed criminal mind and the only person who knows how to find the exit. Will they be able to unravel the tangled mess of clues and win the game against the troubled criminal that tries to manipulate them? They say that, sometimes, it is necessary to put on a suit and get out there to make the world a better place. Maybe this is one of those times.