Alba and Ángel have organised a dream wedding. At least, until one of the wedding guests collapses dead during dessert. The suspects? The bride's uncles, members of the Irish mafia, the same mafia that Luis has been chasing for years from Madrid. But they are not the only ones. Naira and Luis will have to deal with two boyfriends who are in a dysfunctional relationship.

The filming of the Ex Pedición contest, a famous TV reality show in which several couples meet again looking for a second chance, is interrupted when the corpse of Ian, the main star of the show, appears floating. Naira and Luis will have to unmask the murderer among the contestants on the set. Muscled guys, explosive girls, fame, jealousy and passions running high...

This time, the Canarias Noir, a major crime fiction festival, is about to open its doors when a corpse appears on display inside the university that hosts the event. Luis and Naira suspect that it is a ritual crime, typical of a serial killer. However, the turbulent career of the victim, the emerging writer Camila Turino, points in many other directions: a literary critic who abused her; an editor who despised her; a sales competitor who was jealous of her talent; and a father with financial problems who will now inherit the considerable royalties from her work.

Luis tries to get used to his new life in Tenerife, although it is very difficult for him. He reconnects with Jimena, a daughter he barely knows anymore; he gets used to the heat, the slowness of the Canaries, and the impossible bus schedules; and he tries to find some stimulating police case between robberies of tourists and assaults in beach bars. Secretly, Luis is trying to take advantage of his stay on the island to follow a lead in an old case about organized crime that will allow him to be readmitted to Madrid…

But everything changes when a corpse appears floating in the pond of an aquarium, in front of an Imserso excursion. What is initially established as a work accident, soon shows signs of homicide. And one of the members of that aquarium must be the murderer.

Luis Lacasa is a prestigious police inspector from Madrid who suffers from a curious visual disorder: he is unable to distinguish colours. His condition has recently led him to make a serious mistake in an operation, causing a disciplinary suspension. Ramón, his faithful colleague from the Homicide Department, decides to take his friend on a cruise to the Canary Islands, trying to distract him and reconnect with him.