Claude is throwing her first Thanksgiving for all her friends. Owen's two lesbian moms (Valerie Harper and Joanna Kerns) come to visit and share the holiday. The only problem is that his moms have always assumed that Owen is gay. Hoping to keep up the ruse, Owen asks his friends to play along, including asking Carl to pose as his lover. Meanwhile, Lydia and Kipp both get invited to Will's Thanksgiving party, where Kipp is briefly the star attraction.

On the day after Thanksgiving, Owen's two mothers pay a visit to the staff at GNB and begin meddling in their lives. Judy (Joanna Kerns) advises Will on his issues with women, while Judith (Valerie Harper) lives vicariously through Carl and Ramona, encouraging them to indulge in her passions for gambling and drinking. Meanwhile, Claude fears that she'll lose her job when Owen blabs about her interview for another job; and Lydia fears that she'll lose Jeb because she accidentally killed his ""Gamma Toots"" at his family's Thanksgiving celebration.