Thanksgiving turns into a fiasco when Liz invites Mace's overbearing mother, Colleen, to the dinner. A web of deception begins when Mace tells the very conservative Colleen that Philip and Simon are Liz's uncles – instead of her dads. As luck would have it, Colleen is so charmed by Philip and Simon that she wants to introduce them up to her unmarried daughter. Meanwhile Philip spins a tale of his own when he tells his stuffy decorator that Liz's future in-laws are wealthy. But it all goes awry when the designer pays a surprise visit during dinner to meet Liz's future in-laws.