Callie meets her grandfather, which gives her a new perspective on Robert. Meanwhile, Mariana gets ready for a crucial dance-team showdown; and Jude stands up for a friend.

As part of their annual tradition, Stef and Lena have Mike over for Father's Day brunch. Jude surprises everyone, especially Callie, by inviting his biological father, Donald, to join them. Callie spends Father's Day with the Quinns and hears some surprising news. Frustrated by his situation at Idyllwild, Brandon let's off some steam with his classmates.

Stef and Lena hesitate to give their blessing when Mariana’s biological grandfather tells her she must be baptized in order to be her new half-sister Isabella’s godmother. Callie’s actions at her birthday party are called out by Stef, and they make a big decision in order to avoid jeopardizing her adoption.

Jesus is upset after his plans for a low key birthday are supplanted by Mariana, who plans a huge dance party instead. Jude is excited by the prospect of a weekend visit with Connor. Meanwhile, Callie and Brandon strike a truce by agreeing not to bring their new respective significant others home or to family functions.

Brandon throws a party which turns south when secrets are revealed. Mariana and Jude try to convince the students to vote against their school going private.