The Baker Family members starts to undergo a lot of modifications,starting with Lorraine(Hillary Duff), and her desire to go examine in New York. Their oldest daughter,Nora(Piper Perabo),is now married To Bud McNulty,and pregnant. But the few intend to move to Houston Texas,Because of Bud's new work promotion. Feeling that the spouse and children is breaking apart,since the young children expand up and transfer absent. Tom persuades the overall spouse and children to take one final spouse and children vacation all together At Lake Winnetka. Tom's previous rival Jimmy Murtaugh(Eugene Levy), and his substantial family are also there for the summer time.