Shortly after winning an award, Jo learns that her jailbird father, is getting paroled and that he would like to attend the awards ceremony. However, an ashamed Jo, tries to keep her father from attending as well as tries to keep secret the fact that her dad is in prison.

Jo has been accepted at Langley College along with Blair but doesn't tell anyone that she has since she doesn't plan on going due to her and her parents financial situation. However, when she takes a trip home for the weekend, she learns that her entire family found out the truth and are now counting on her to do well.

Graduation has everyone rushing around and Natalie and Tootie are worried that their isn't going to be enough time for Jo and Blair to say goodbye, especially since Blair and Jo are at each other's throats, as usual.

As graduation day arrives, Monica is furious that Blair's father won't attend, Rose is furious at Charlie due to his sudden tranformation into a big spender and Natalie and Tootie are scared that they will lose Blair and Jo as friends when they leave for college.

Jo begins seeing sparks between her divorced parents and immediately hopes they get back together. However, her hopes quickly become dashed when she learns that her father is planning to marry another woman.

During an alumni weekend at Langley, Blair's mother and Jo's father bond which leads to Blair and Jo's fears of becoming sisters.

Jo's father shows up to announce that he's won a publisher's giveaway, and is determined to give Jo everything he could never give her before.

Jo is unhappy that Blair is playing matchmaker for Jo's lonely father, but she's really upset with the final results.

After her commencement speech is rejected, Jo refuses to make a speech at all, but then learns that her grandfather has come all the way from Poland to hear it.

It's not music to his ears when Jo's dad learns that her boyfriend plays piano at a dinner joint.

Rick proposes to Jo in his own crazy way, and everyone anticipates a wedding everyone, that is, except Jo, who still hasn't accepted.