Doug's plans for a recreation room are thwarted when Carrie's father and sister move in; he pretends to go on a diet to persuade Carrie to lose weight; and begins to worry when Carrie chooses an orchestral concert over a softball game.
Doug ignores Carrie's fears and buys a motorcycle - so she takes up smoking to spite him; he feels jealous when his wife becomes close friends with the new neighbour; and he tries to get out of going to the bank.
Arthur is inspired by a book; Doug gets carried away and tells too many home truths at a celebratory dinner for his boss; and the deliveryman is unsettled to learn Carrie buys his clothes from an outsize shop.
Doug hires a dog walker to keep Arthur occupied; he treats Carrie to laser eye surgery for her birthday - but the side effects leave her blind for a week; and his colleagues resent his achievement in breaking the record for perfect deliveries.
Doug and Arthur spend an increasing amount of time together when Carrie is forced to work night shifts; Doug and Carrie fail to make a good impression on a professional couple who move in next door; and Carrie is stunned when God seemingly grants her prayers for a pay rise.
Doug takes Carrie on a romantic weekend break; he tries to boost his deflated ego by brushing up his table tennis skills in a bid to beat Carrie at the game; and Doug and Carrie decide to renew their wedding vows - but organising the ceremony proves more complicated than expected.
Doug tries to get into Carrie's good books so she will let him take a trip to Las Vegas with his friends; Arthur suspects Doug and Carrie are having fun without him; and Doug reluctantly agrees to join a support group for overeaters.
Doug persuades Carrie to take pole-dancing lessons; the couple consider marriage counselling; and Carrie discovers Doug lied to her when they were dating.