Paris 2020. While superheroes have assimilated into the Parisian society, they discover a new drug that gives themselves personal superpowers to mere mortals. Lieutenants Moreau and Schaltzmann are investigating the case with the support of two ex-superheroes, Monte Carlo and Callista. They'll do whatever it takes to dismantle the traffic. But Moreau's past resurfaces, and the investigation becomes more complicated.