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 his father'sballoon on campus, after seeing her kiss her ex-boyfriend Mat. Callie admits her past relationship with Brandon to her moms. But before Stef and Lena can even process the information, the school goes into the "Code Blue" lockdown.

The Fosters Season 4 Episodes...

• s04e01 - Potential Energy
• s04e02 - Safe
• s04e03 - Trust
• s04e04 - Now for Then
• s04e05 - Forty
• s04e06 - Justify
• s04e07 - Highs & Lows
• s04e08 - Girl Code
• s04e09 - New York
• s04e10 - Collateral Damage
• s04e11 - Insult To Injury
• s04e12 - Dream a Little Dream
• s04e13 - Cruel and Unusual
• s04e14 - Doors and Windows
• s04e15 - Sex Ed
• s04e16 - The Long Haul
• s04e17 - Diamond in the Rough
• s04e18 - Dirty Laundry
• s04e19 - Who Knows?
• s04e20 - Until Tomorrow

The Fosters Show Summary

"The Fosters" is a compelling drama about a multi-ethnic family mix of foster and biological kids being raised by two moms. Stef Foster, a dedicated police officer, and her partner Lena 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.

Their lives are disrupted in unexpected ways when Lena meets Callie, a hardened teen with an abusive past who has spent her life in and out of foster homes. Lena and Stef warily welcome Callie into their home thinking it's just for a few weeks, until a more permanent placement can be found. What happens next will determine if Stef and Lena made the right choice in taking a chance on Callie, and whether they have room in their home - and their hearts - for one more.