Europol Agent Tom Brindle is dispatched to Barcelona, Spain, on a mission to capture the infamous serial killer dubbed Pygmalion. The investigation points to a young and unpredictable soldier named Marco Soler, whose fingerprints are found at the scene. Agent Brindle apprehends Marco and subjects him to a rigorous interrogation, certain that he has caught the right person. However, Marco presents an unbreakable alibi, prompting Agent Brindle to delve deeper into the case, ultimately uncovering a startling revelation.