A widow regains her ancestral home. Her daughter and son-in-law move in, but tensions arise in their marriage. He finds old letters that unravel his mental state, pushing him into obsession and paranoia as the letters seem to hold secrets.

After years of legal battles, a widow regains possession of her ancestral home. Her daughter and son-in-law move in with her temporarily, but underlying tensions in their marriage quickly surface. As the strain between them grows, the son-in-law stumbles upon an old sandook containing a collection of letters. The discovery sets off a chain of events that begins to unravel his mental state, pushing him toward obsession and paranoia. The letters seem to hold secrets that threaten not just his sanity but the fragile balance within the household.