Following multiple confrontations in her life, Callie decides to make a change. Gael learns something unexpected about Elijah from the group commissioning his new art project. Meanwhile, Mariana gets the real story about what happened with the female former engineer.
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.