The Adams-Foster clan comes to the Coterie to spend Christmas with Callie and Mariana. Callie struggles to tell her moms about quitting her clerkship, while Mariana agrees to volunteer for a holiday festival for the underprivileged. Alice is hiding a secret from the Coterie, and Davia strolls down memory lane with Dennis, opening old wounds.
Taking place a few years after the events of The Fosters, Adams Foster siblings Callie and Mariana relocate to Los Angeles to begin the next phase of their lives. As they move into a communal living apartment building called The Coterie, Callie becomes a law clerk working for Judge Wilson while Mariana becomes a software engineer. The two of them navigate their young adult lives while interacting with their neighbors and the people they befriend.