Jay has grown children, grandchildren and a gorgeous young wife, who has a preteen son of her own; all together they must bridge generational, cultural and social gaps.
After some nudging, Jay begrudgingly takes Phil out to fly his new model airplane -- that is until a maneuver goes awry. Meanwhile, when Gloria drops Manny off to play with Luke, she ends up volunteering to take Alex dress shopping, and Claire finds herself sitting down for an unexpected brother and sister heart-to-heart with Manny.
Claire and Mitchell's mother, Dede, drops in for a surprise visit and is determined to make amends with everyone she offended during what has been deemed "the incident" at Jay and Gloria's wedding. Needless to say, no one is thrilled to see her and everything comes to a head when the whole family shows up to dinner at Claire's house.
With a history of giving bad gifts, Claire is determined to surprise Phil with an amazing anniversary present - a private performance by Izzy LaFontaine (Edward Norton), one of their favorite musicians! However, it turns out to be a surprise in more ways than one. Meanwhile, Mitchell and Cameron call up their party-girl bestie, Sal, for a long overdue night out on the town.
Nothing is too big when Phil and Claire decide to throw Luke the biggest and best birthday party a boy could ever want. But when Cameron shows up as Fizbo, the Clown, it sets of a chain of events that ends with someone in the hospital.