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.

When Bridget is busted over a school dress code violation, Cate is called upon to meet with her new principal. But Cate is in for a shock when she discovers that she went to high school with him. Meanwhile, when C.J. becomes his massage therapist, Jim hurts his feelings when he refuses to admit that his grandson has become good at something.

Kerry doubts Bridget's ability to put together the school's Halloween party as part of her Student Body President duties. C.J. is hired as the party's security guard and sets his sights on catching Rory pulling off a prank. Jim finds himself under attack by the neighborhood kids when he refuses to hand out candy to the trick-or-treaters.