Mary's plans are thrown into limbo; Martyn is in a panic; Jeffrey is working on a new Malibu restaurant.
Mary seeks a client's trust; the furniture isn't installed and Jeffrey's client is early.
In the season premiere, Martyn is thrown into a panic when he hears of an issue that threatens to derail the installation of Tamara Mellon's 30 million dollar Manhattan apartment. Kathryn brings her housekeeper Jacqueline to check on the progress of a stunning home in California wine country, but they spend more time drinking wine than on design. Meanwhile, Mary must navigate the personality quirks of a major Beverly Hills client who defers design decisions to her beloved dog.
Jeffrey may have made a mistake by giving Ross the lead on a major design project for supermodel and actress Amber Valletta. Kathryn runs into issues during the installation of a stunning, multi-million dollar home in California wine country that could cost her the job. Mary and Martyn have a rocky start to the beginning of an important collaboration on a tabletop collection for One Kings Lane.
Martyn and Mary journey to India to design a tabletop collection for One Kings Lane but major creative differences threaten to derail the collaboration. Kathryn travels to Dallas to help an old friend with her new home but finds herself in a power struggle that could sink the job and her friendship.