It's Davia's birthday and the Coterie group goes out for an epic competitive bar-crawl, causing tensions to run high between the romantic "rectangle" of Callie, Jamie, Gael and Bryan; and a surprising run-in with Callie and Mariana's brother, Brandon. Meanwhile, Alice struggles with Sumi's constant flirtations during the evening, while Mariana and Raj bond.
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.