Golden Age (2017)

A jaded teenager begrudgingly visits her grandmother, a former B-list actress with dementia facing eviction from her retirement home. While watching a "Casablanca"-esque film from the 1940's her grandmother starred in, the two are magically transported inside the movie where they must escape Nazis and stop World War II, all with the help of a fast-talking, Humphrey Bogart-like romantic.