While vacationing, a girl and her parents are taken hostage by armed strangers who demand that the family make a choice to avert the apocalypse.
 
Knock Knock.
Who's there?
At least.
At least, who?
At least it wasn't as bad as The Last Airbender.
 
FUN FACT:  At the premiere, in some cinemas, at the entrance, the spectators were asked to give up something they cared for the entire duration of the film, in exchange for a gift at the end. If you chose yes, then your smartphone was bagged and sealed. By handing over the still sealed envelope at the exit, you received a nice prize. The initiative read "MAKE YOUR CHOICE. You would give up one of the things you care about most for the duration of the film. Prove it, your sacrifice could be rewarded"