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 struggles to recover and come to terms with his guilt over sleeping with Dani, and big questions still remain about what Mike was up to the night Ana disappeared. Meanwhile, Jesus and Emma's relationship impacts Emma's standing with her teammates, which causes tension between them. Mariana has made a big change, much to Stef's dismay.
Brandon contemplates a big decision that could either restore or destroy his dream of playing piano, but Stef and Lena find themselves on opposite ends of the debate. The Foster siblings plot to cheer Brandon up by taking him out to see a band and he butts heads with the sexy lead singer Lou. Meanwhile, Stef confronts Mike about his whereabouts the night Ana disappeared. A mysterious stranger keeps tabs on Callie, and Callie is faced with a choice that could further complicate her life. An encounter with Connor's dad creates a rift in Jude and Connor's friendship. And Jesus begins to feel threatened by Emma's independent spirit.
Stef and Lena go on a babymoon, leaving Brandon and Callie in charge of the house. Brandon's bandmates pressure him into having a few friends over to hear their new sound, but when Mariana and Jesus find out, the night turns into an all-out rager. Determined to follow Stef and Lena's rules, Callie tries to police the party but fails miserably. Jude finds himself in an awkward game of spin the bottle. Meanwhile, Lena tries to reconnect with Stef, who is finding it hard to relax on their weekend getaway.
Callie makes an important decision to address the hold-up in her adoption face on, but Jude may be more affected by her choice than he lets show. Things heat up between Callie and Wyatt, but Callie realizes she may not be emotionally ready to take the next step. Lena vies for the Principal's job at Anchor Beach, which causes some friction in her already rocky relationship with Timothy. When the dance team holds auditions for a new member, Mariana questions why she was chosen to join the team, and she doesn't like the answer.
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, who becomes unwillingly involved in his dilemma. Stef struggles with her suspicions about Mike and debates moving forward with her investigation into Ana's disappearance. When Brandon's bandmates take him on a hike for some "special" inspiration, Brandon opens up to an unexpected confidant about his past transgressions. And Callie's emotions get the better of her when things get hot and heavy with Wyatt.
Tragedy strikes the Fosters and they must look to each other for strength. Stef confronts Mike about Ana, and he comes clean about why he was at the halfway house the night of Ana's disappearance. Meanwhile, Wyatt seeks relationship advice from a very uncomfortable Brandon, and Mariana is still furious with Jesus for putting her in the middle of his girl problems.
Lena supports Brandon as he unloads a long-held secret that could tear his family apart. Callie brings Jude for a visit with the Quinn family in the hopes that Jude will no longer feel so threatened by this other side of Callie's life. Meanwhile, Jesus is torn between feelings of guilt over his failed relationship with Emma and pressure to prove his loyalty to Hayley. Mariana's dance team prepares for an upcoming competition, and her insecurities threaten to get the best of her.
Callie pays a visit to Girls United to pitch in for Community Day and is surprised by new developments at her former foster group home. Paranoid neighbors are putting pressure on the home's landlord to kick the girls out, and a new resident has secrets that could jeopardize the safety of the entire group.
Meanwhile, Mariana and Hayley plan to cook a romantic double-date dinner for Mat and Jesus. And Stef receives a concerning letter from Ana.
The Foster kids attend a Mexican street festival, but the fun day takes a turn when emotions flare up. With help from Wyatt, Callie works to overcome her recent bout of panic attacks by learning to trust her instincts, but an encounter with someone from the past threatens to violently derail her progress. Mat surprises Mariana with a date at the festival and is confused when Mariana seems offended. Jesus tries to impress Hayley but she wants him to prove he's with her for more than just sex.
Meanwhile, Mike and Ana make plans to right past wrongs.
In an effort to help Rita with a dilemma involving Girls United, Callie calls in a favor from her wealthy biological father, Robert Quinn. But an unexpected betrayal threatens to derail the new bond she's forging with the Quinns.
Meanwhile, the pressure Connor faces from his father to end his friendship with Jude intensifies and leads Lena to make a life-changing decision. The tension mounts between Brandon and Lou, despite their bandmate Mat's warnings against drama. And a visit with someone from his past makes Jesus see his relationship with Hayley in a whole new light.
The family embark on a camping trip, but the kids aren't too excited about it. Meanwhile, Jesus' secrets are exposed; things get awkward between Callie and Brandon; Jude grows annoyed with how others treat him; and Mike invites Ana to move in with him.
Callie tries to find a place in her life for Robert; Brandon attempts to convince the band to work with his mother's rules; Jude and Connor go on a double date.
Callie helps Daphne prepare for a visit with her daughter; a gig for Brandon and his band goes awry; Stef and Lena think about Ana's proposal; Jesus is offered the chance to attend a prestigious wrestling school.
Stef and Lena attempt to understand Callie's decision; Monte and Timothy's disagreement over the school curriculum puts Lena in a tough spot; Mariana tries to get a talented dancer to join her team.
Mariana organizes a student protest at school; Callie puts herself in danger when she learns Kiara is back in town and on the streets; Jude and Connor reach a critical point in their relationship.
Stef bends the truth with Lena about a way to adopt Callie, while Lena hides her emotions from Stef. Elsewhere, Brandon must make a sacrifice in order to live out his dream of being a classical musician; and a defiant Jude sees Connor.
Callie confronts demons from the past; Mariana worries about the future of Ana's baby; Jude deals with the repercussions of his poor decision; Lena discusses her domestic troubles with Monte.
With one too many lies told in an effort to keep their growing family together, relationships will be put to the test and someone's story will end in tragedy on "The Fosters" Spring Finale. A visit with Robert's father makes Robert and Callie see each other in a new light. Mariana prepares for a make-or-break dance team showdown at school, and Jude takes a stand for a friend.