(you and friends are new students at at Anchor Beach Community Charter School) Stef Foster and Lena Adams are the Fosters, an interracial lesbian couple who are partners and living in the Mission Bay area of San Diego, raising Stef's biological son, Brandon Foster, along with their adopted twins Jesus and Mariana. Stef is a police officer, while Lena is a school principal. Lena decides to take in Callie, a "troubled" teen girl with an abusive past whose ways will turn the family lives upside down. Subsequently to the family, will be added, Callie's youngest maternal half-brother Jude. In the end, the two women will legally marry, and the two siblings will definitively be adopted