In the bustling Paris of the 1960s, a young and handsome engineer finds himself caught in a twisted plot of love and mystery after discovering a secret he was never meant to know. It all begins when he falls hopelessly in love with a charming woman who appears to lead a simple life but actually harbors a dark past. What he does not realize is that his heart will lead him into a series of unexpected and dangerous events.
As he tries to win her over, he finds himself in the middle of a deadly game between spies and criminals operating in the shadows of the city. The plot thickens when his girlfriend is kidnapped by a group of gangsters looking to retrieve a stolen item. Desperate, the engineer plunges into a world of intrigue, where alliances are fragile and betrayal lurks around every corner.
With the help of an old friend, a somewhat clumsy but endearing detective, he embarks on a frantic quest to rescue his beloved. As the two get closer to the truth, they uncover a much larger scheme that threatens the security of the entire city. With a blend of comedy, romance, and unexpected twists, the engineer must use his wit and courage to overcome the obstacles, while learning that in love and in life, nothing is as it seems. With a vibrant atmosphere and a unique aesthetic, the film pays homage to the golden age of romantic adventure cinema.