Regina, Kathryn and John set ground rules after they learn the extent of Daphne's self-destructive behavior; a new dress code causes Bay to reconsider attending her school's prom.

As the holidays approach, Bay bristles at Kathryn's festive holiday spirit, complete with homemade peanut brittle and Christmas karaoke, while Daphne is frustrated with Regina's usual tradition of movies and Chinese food for Christmas. Then, after a joint family dinner including "magical" garlic knots, they wake to discover that the switch never happened. In this alternate life, Bay is an Olympic hopeful and Daphne is a successful artist with an upcoming exhibit. Is it the Christmas miracle they've always wanted? Could they even get back if they tried?.