It's rude to pretend to be your twin at work.
Gary was sick and couldn't afford to take the day off, his twin Terry gets an idea.
Terry wants to resolve the money issue.
Terry finds another way to make money to make up for the loss of one day's pay for Gary.
Terry goes to Gary's job and pretends to be him and works.
Gary is happy that Terry found another way to come up with the money.
Terry fools everyone, but he realizes just how difficult Gary's job actually is.