April and the Extraordinary World (2015)

In an alternate 1941, France stagnates under Napoleon V, with technological progress frozen in the 19th century. April Franklin, a young scientist, discovers her parents’ research on an invincibility serum—work they were close to finishing before their sudden disappearance. With her talking cat, Darwin, and a rogue ally named Julius, April embarks on a perilous journey through a world dominated by steam and coal.