"The Fosters" is a compelling, one-hour drama about a multi-ethnic family mix of foster and biological teenaged kids being raised by two moms. Stef Adams Foster, a dedicated police officer, and her wife, Lena Adams Foster, a school Vice Principal, have built a close-knit, loving family with Stef's biological son from a previous marriage, Brandon, and their adopted twins, Mariana and Jesus. Recently added to the mix are their newly adopted son, Jude, and his half-sister, Callie.
It is Lena's 40th birthday and the family prepares for her big 70s-themed bash. Callie and Aaron visit Kyle, Callie's former foster brother in juvie and try to come up with ways to get him a new trial.
As Callie begins working on her senior project photographing her former foster homes, each visit brings new perspective on her past.
Callie is reaction to a derogatory comment gets her suspended while Mariana is blamed for Nick is actions.
In the aftermath of the school lockdown, the family returns home where more secrets await.
Tensions run high as Stef and Lena are called to action when the school is put on lockdown after it's discovered that Mariana's boyfriend Nick brought a gun on campus.