An entire apartment behind bathroom mirror, say what? Watch this bizarre video

In the video, Samantha showed netizens how she decided to find out why the calm wind in her bathroom despite no window. 
The video shows the woman finding the breeze came from behind a mirror placed over a sink. The video shows a large hole opening up in a room with no light on, removing the mirror from its place. 

And when Samantha steps into the room wearing a mask, gloves and holding a hammer for safety. She discovers that it was not just a room but a full apartment behind her bathroom mirror.  Watch the video.