In the distant future, when cities move about and consume smaller towns, a fifteen-year-old apprentice is pushed out of London by the man he most admires and must seek answers in the perilous Out-Country, aided by one girl and the memory of another.
Mortal Engines is an upcoming post-apocalyptic adventure film directed by Christian Rivers and with a screenplay by Fran Walsh, Philippa Boyens and Peter Jackson. It stars Hugo Weaving, Hera Hilmar, Robert Sheehan, Jihae, Ronan Raftery, Leila George, Patrick Malahide, and Stephen Lang. (from Wikipedia) It hits theaters December 14, 2018.
If you want more alternative worlds with powerful machines, check out these suggestions for the steampunk-inspired action adventure, Mortal Engines.