黛比（瑞茜·威瑟斯彭饰）和彼得（阿什顿·库彻饰）是最好的朋友，但性格却截然不同。黛比渴望和儿子在洛杉矶过着普通生活；彼得则在不断变化的纽约奋力拼搏。他们决定交换房子并体验彼此的生活，一周后，他们发现自己向往的一切可能并不是内心真正需要的东西。

ThewinterholidaysareturningouttobeespeciallystressfulforGregHeffleythisyear.AfteraccidentallydamagingasnowplowwhilemakingasnowmanwithbestfriendRowleyJefferson,Gregworrieshewon’tgetthenewvideogameconsolehesodesperatelywantsforChristmas.Tomakemattersworse,hegetssnowedinwithhisfamily,includinghisgrumpyolderbrotherRodrickandannoyingyoungerbrotherManny.