In a post-apocalyptic world where cities ride on wheels and consume each other to survive, two people meet in London and try to stop a conspiracy.

The young magician Marek dreams of exciting adventures. When she meets the help-seeking priestess Teela she offers her assistance and provides a motley troupe. Together they go in search of Teela's sister, who was kidnapped by a wild ogre.

When a rogue former agent threatens to deploy a deadly biological weapon, superspy Ethan Hunt races across the globe to stop him.