It's the time of legislative elections in Argentina. The candidate lists are about to close. In the middle of the night, the corpse of a decapitated woman appears in the brand new home of one of the aspiring national congressmen. His partner, a young officer, with the help of the prosecutor appointed in the case, will try to unravel the riddle that contains the macabre message. After the veiled threat, a mafia plot of impunity and espionage will soon begin to unfold, involving the highest echelons of political power in a sinister business.