He’s here to save Walter’s life.
“Plagued by his own demons, Walter Black was once a successful toy executive and family man who now suffers from depression. No matter what he tries, Walter can’t seem to get himself back on track…until a beaver hand puppet enters his life.”
The Beaver movie is touted as an emotional story about a man on a journey to re-discover his family and re-start his life. I think the description is right: it does look like an emotional journey. I’m impatient to watch this movie and Mel Gibson’s amazing performance.