The Monster Game

My fifth screenplay is called The Monster Game.

A man wakes up in a forest and can't remember how he got there.

Over the next fifty years he builds a castle in the trees, keeps a hot water bottle called Walter for company, and posts to his two young daughters every day. Two million people watch.

At the edge of the forest there's a wall of white with EDGE OF FOREST written across it. Nobody in the comments knows what that means either.

He discovers some of his world was never finished.  It takes the rest of his life to find the part with his family in it.

Nomadland meets The Truman show, if you need the summary.