It's a big day for Callie as her future with the Fosters hinges on the revelation that Donald is not her birth father. What happens next could threaten to separate Callie and Jude once again.

Brandon joins a garage band. Stef confronts Mike about Ana. Callie's father wants a test to prove his paternity.

While Lena and Stef are away on a babymoon, the kids throw a party that gets out of hand.

Callie meets her half-sister for the first time. Timothy starts a legal battle over his parental rights of the baby.

Callie frets about the anxiety her recent decisions have caused Jude. Emma second-guesses her breakup with Jesus, putting him in an awkward position with a new love interest and with Mariana.

Lena learns about a medical issue affecting her pregnancy. Stef confronts Mike about Ana.

Dani deals with the consequences for what happened with Brandon. Jude and Callie spend the day on the Quinn's yacht.

Callie returns to the Girl's United home to deal with lingering issues. Mariana and Jesus plan a group dinner for Mat and Hayley.

The kids attend a festival. Ana wants to make amends with the twins.

Robert Quinn agrees to aid Girls United through a fundraiser. Lena has a disagreement with the new principal. The twins meet with Ana who wants to apologize. Sophia Quinn admits something that will change Callie's future.

Brandon thinks back over Callie and Jude's first Christmas with the Fosters.

The Quinns are interested in having Callie join the family; Stef and Lena take different sides on several issues; Brandon is invited to attend a prestigious music program; Jesus hears shocking news at Ana's AA meeting.

Callie turns to Stef for help after she learns that Kiara has been placed in an unfit foster home; Mariana hides her high math scores from Mat; Brandon is given an opportunity with the band; Jesus reveals his secret to Hayley.

The family heads into the wilderness for a camping trip; Jesus has a difficult time keeping secrets; Brandon and Callie work on their relationship; Jude dislikes the way he is being treated; Mike asks Ana for a big commitment.

Callie tries to find a place in her life for Robert; Jude and Connor go on a double date. Ana's situation gives Mariana a risky idea for the Adams Foster family. Brandon aims to convince the band that his mom's rules can work for everyone.

Callie helps Daphne prepare for an official visit with her daughter. Callie makes a desicion that could change lives. Jesus is offered to attend a top-rated wrestling school. Brandon and his band play a "pharm" party. With Mariana urging, Stef and Lena consider Ana's proposal.

Stef and Lena deal with Callie's decision; Monte and Timothy disagree over the school curriculum.

Mariana organizes a protest at school; Callie learns Kiara is back in town and on the streets.

Stef's plan to adopt Callie involves questionable methods; Lena has conflicting emotions over expanding the family; Brandon's musical dreams may come at a price; Jude faces dire consequences when he breaks the rules.

Callie faces another barrier on her road to a better future. Lena opens up to Monte about her troubles at home; Mariana makes inquiries about letter Ana wrote to family members; Jude deals with the consequences of using poor judgment.

Callie sees Robert in a new light after she visits with his father; Mariana prepares for a critical dance team showdown; Jude stands up for a friend.