Something happened on the train that took Carla back home from the University. Something that made her run away and leave everything, even her boyfriend. Suddenly he was on a plane en route to Seville. It will match a flight attendant known to him, Zoe. But during the flight, Carla suffers a cardiac arrest. A plot of political corruption looms around the case of Carla's death. Apparently, a natural death, but of which Miguel Rojas, a Sevillian police officer, has serious doubts. So, he will travel to Barcelona together with his partner Daniel to investigate, taking care of the possible case. Zoe will be involved being attacked by a stranger who demands immediate delivery of the object that, supposedly, Carla handed him. People with a lot of power in the financial and political world are in the spotlight.