Paul's job as parental guardian becomes more of a full-time position when Cate is up for a promotion and has to spend more time at the hospital. After Paul introduces Rory to baseball card collecting, Rory trades the cards for something not exactly associated with the sport.

After reluctantly inviting socially inept neighbors Fred and Mary Ellen Doyle and their kids over for dinner, Paul and Cate are shocked when the entire Hennessy clan is asked to take part in the Doyles' daughter's wedding. Meanwhile Kerry neglects to inform Bridget that geeky Donny Doyle has grown up to be a hunk, and Rory takes a part in a play as a cross-dresser in order to meet girls.