Firstborn

About Firstborn on 123movies: released in 1984, directed by Michael Apted, running 103 minutes, produced in the United States. Because he's the oldest, Jake has been the man of the house, since his parents divorce. When Mom starts seeing Sam, who always seems to be trying some new way to get rich quick, and declares he's the man of the house now, Jake puts up with it. Until he discovers Sam's illegal activities.