Callie is accused of selling pills around school, and Lena and Stef decide not to punish Brandon which causes tension among the parents.

Mike asks Brandon to move in with him, and Jesus and Lexi continue to keep their relationship a secret from Mariana.

Everyone is celebrating Mariana's quinceanera, and the secret Jesus has been hiding comes to light, which causes tension between Mariana and Lexi.

Stef and Lena try to find time to work on their relationship, while Lexi and Jesus have to deal with the consequences of their actions.

Brandon has an audition for a sought after piano coach, while Jesus is invited to a church camp.

Lexi's parents punish her when they find out the truth about Lexi and Jesus.

Stef and Lena have dinner with Lena's ex.

The Fosters are getting married, but Stef is not as involved as a stressed out Lena would like.

The family is impacted by Callie's decision to run away; Mariana learns the truth about Lexi's trip.

A family gathering brings Callie back into the Fosters' home for the first time since she ran away.

Jesus is pressured to make a difficult choice; Callie is torn between protecting two friends.

Callie is now officially adopted into the Adams Foster family and must put aside any romantic feelings for Brandon. She does so by throwing herself into her “Fost and Found” website, even drawing the interest of an investor.

Brandon is upset when he learns that his shared secret with Callie is in jeopardy. Lena and Stef’s mother, Sharon, disagrees over how Stef should handle her diagnosis. Meanwhile, Mariana’s run for junior class president heats up as the simmering resentment between her and Lexi comes to a head.

While Stef recovers from surgery, she and Lena grow concerned when they find out Justina wants Callie to support a legislation that they know nothing about.