The government is asking Eiffel to design something spectacular for the 1889 Paris World Fair, but Eiffel simply wants to design the subway. Suddenly, everything changes when Eiffel crosses paths with a mysterious woman from his past.

Franck just had the most crazy and wonderful idea for a company that would finally get him and his friends proper jobs. As Uber delivers food, Amazon daily items, Song Express will deliver songs. To your friends, or your loved one, or yourself, anywhere you want. It is brilliant, it is foolish, it could work… For Franck, Jean-Claude, Sophie and José, Song Express becomes something more than just a professional challenge: it is the dream of a lifetime.

Stéphane defers his frustration at not having had a son on his sons-in-law. So when her younger daughter decides to leave a rugby player than the idolatrous father for a doctor he can not stand, he will do everything to get his son-in-law back. His daughter will not let it go.

With the help of her delivery-boy friend, Dilili, a young Kanak, investigates a spate of mysterious kidnappings of young girls that is plaguing Belle Epoque Paris. In the course of her investigation she encounters a series of extraordinary characters, each of whom provides her with clues that will help her in her quest.