Stef Foster and Lena Adams' family of adopted and biological children grows when a hardened teen who has spent her life in and out of foster homes joins the mix.

Mike becomes upset when Lena and Stef decide not to punish Brandon. Meanwhile, Jesus gets into a fight at school after he stops taking his medication and making living space for Callie and Jude proves difficult for the Foster teens.

Mike asks Brandon to move in with him. Meanwhile, Mariana disapproves of Jesus and Lexi's relationship and a school assignment causes Callie to revisit her own dark secrets.

Mariana asks Callie to be in her court at her quinceanera. Meanwhile, Lexi wants to come clean to Mariana about her relationship with Jesus and the arrival of Lena's mother creates friction.

Jesus and Lexi take things further than they planned. Meanwhile Brandon has reservations about Callie dating Wyatt and Mariana tries to fit in with the cool crowd.

The Fosters host a dinner attended by Lexi's protective parents and Stef's conservative father. Meanwhile, Callie meets someone with a connection to her past and Mike arrives late to transport Brandon to an important music audition.