The Police of Barcelona finds in a vacant lot the body of a man brutally murdered. From then, starts a criminal investigation to find evidences to determine who was the murderer. However, the resolution of the case will be affected by the rivalry that have the head of homicides dept and the head of the forensic scientists for the same woman. When they discover a second body , they realize that they have to leave their personal confrontation to resolve the case. The evidences will make them to immerse in a live game devised by a young psychopath and his submissive friend.

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