The Fosters tells the story of Stef and Lena Foster, a mixed-race couple who are raising Stef’s biological son Brandon, along with several adopted children. When Lena decides to take in Callie, a troubled teen with an abusive past, Callie’s disruptive ways threaten to turn the Fosters’ lives upside down. Brandon, who has a warm relationship with his two moms and adoptive siblings, is instantly drawn to Callie.
The parents will be played by the actresses Sherri Saum and Teri Polo. According to The Hollywood Reporter, Polo, who recently starred in ABC's Man Up, will portray Stef, who is described as a tough but kind police officer not eager to add to the large family. She soon realizes that her family might be Callie's best hope for a better life.
Saum, who also appeared on HBO's In Treatment, will play Lena, an altruistic school principal determiend to save as many kids as she can. She agrees to take Callie in without Stef's knowledge.