While cleaning out the Heffernan freezer, Carrie comes across the top tier of her and Doug's wedding cake, and reflects back to the time when they got married. As she takes a trip down memory lane, Carrie remembers her uneasiness prior to their wedding day and her desperation in needing a sign from God to be sure about the marriage. The priest calms Carrie's insecurity by informing her that she and Doug actually met years before when they were kids. Carrie feels that that's a "sign" from above, but Doug later learns that it was Danny, his cousin, whom she met, not him, and is afraid to tell her the truth. Also, Arthur convinces Doug's parents to cover the cost of the wedding, and then proceeds to spend all their money to make the day extra special.

Carrie and Doug begin preparing for tax time and realize that their charitable giving leaves a little to be desired. In an effort to get out of feeling guilty and to make amends for what they see as "selfish living" in the past year, they decide to make a donation to the local kid's library at Deacon's son's school. However, Carrie's charitable spirit starts to be about recognition rather than the actual joy of giving. When the administration mistakenly thinks the Heffernans gave $500 rather than $50, Doug and Carrie scramble to keep the recognition without having to pay the price.

Doug and Carrie run into Father McAndrew at the fish market. They exchange pleasantries and as they are parting ways, Father McAndrew tells them that he would love to see them in church sometime. Unsure of how to decline politely, the Heffernans instead agree to attend Sunday's services. During the service, Carrie reflects on the one thing that she really needs help with – a raise. Miraculously, the following day, Carrie receives word that her prayers have been answered and that she is getting her raise. Much to Doug's dismay, Carrie's prayers turn to more frivolous things – like shoe sales. He does his best to convince her that God would never approve of her prayers, but soon enough Carrie catches Doug praying for the Jets to win their latest football game. Meanwhile, Arthur hosts an open house in order to sell the house. Unfortunately, he hasn't mentioned a word of his efforts to Doug or Carrie, the homeowners.

At a wedding, Doug takes a naughty picture with a disposable camera supplied by the bride and groom. After letting Danny take the blame, and after confessing to a priest, he has the dreaded task of coming forward with the truth.

During a romantic dinner, Doug is inspired to proclaim his love to Carrie. Carrie is taken by his gesture and suggests that they renew their vows. The two find that planning the wedding is much more troublesome than expected. The ceremony is on again, off again as Doug and Carrie are faced with endless complications, including finding a chimp to serve as Doug's best man. In the midst of the wedding planning Arthur is praying that his wedding present, aged Port wine, will go unused when he discovers the value of the fine wine on E-bay.