After all, how can you follow a movie about the literal end of the world? Most filmmakers might see the apocalypse as an obstacle to write around or retcon, but Waugh was determined to honor the plot of Greenland, in which engineer John Garrity (Gerard Butler) races across America to save his family from an Earth-ending meteor by bringing them to a military bunker on the eponymous Denmark-owned island.
Source: Greenland 2: How Children of Men inspired Gerard Butler’s new post-apocalyptic thriller
