Jillian and Tom are newlyweds living in Tom's childhood 1980s home, and they are settling into domestic life. But each person has brought secrets into the marriage that the other doesn't know about. Now, they discover a very strange blue door in their basement, one that hadn't been there before. All of those secrets they kept begin to threaten not just their relationship with each other but also their very lives as childhood dreams take on a whole new light.