You start off in an old farmhouse, which looks mostly normal, but is a little odd, and is really odd when you discover you can walk through the fridge or the fireplace, into other "worlds". We can't say what this all means, because we didn't do what we were supposed to do.
We were meant to explore the space to solve the mystery of what happened to a family in a farm house..but, due to the large numbers of people, many elementary school aged, that was hard to do. We found the video clue "Part IV" prior to finding "Part I" and only figured out the task at hand after an hour of wandering around.
Even just wandering around the place is impressive for its scale, variety and attention to detail, as is illustrated (we hope!) below.