Hidden (2015)

Hidden (2015) is a psychological horror thriller film directed by Matt Duffer and Ross Duffer, better known as the Duffer Brothers (creators of Stranger Things). The film explores themes of survival, fear, and family under dire circumstances in a post-apocalyptic setting.
Hidden follows the story of the Anders family, who have been living in an underground bunker for 301 days after a mysterious outbreak on the surface has wiped out most of humanity.