From the producers of the Academy Award-nominated Persepolis and the mind of renowned graphic novelist Jacques Tardi comes a riveting sci-fi adventure set in an alternate steampunk world. Paris, 1941. A family of scientists is on the brink of discovering a powerful longevity serum when all of a sudden a mysterious force abducts them, leaving their young daughter April behind. Ten years later, April (Academy Award winner Marion Cotillard) lives alone with her cat, Darwin, and carries on her family's research in secret. But she soon finds herself at the center of a shadowy and far- reaching conspiracy, and on the run.