Monster Strike the Movie: Sora no Kanata

Synopsis

A catastrophic event 13 years prior fractured Tokyo, creating a sky-bound "Old Tokyo" and a grounded "New Tokyo." Cut off from each other, the two halves of the city have lived separate lives until a young girl discovers Old Tokyo is destined to plummet. She embarks on a dangerous journey from the floating city to the one below, determined to avert disaster and save its inhabitants.