Cate and Ryan return from their honeymoon only to discover that major changes have been made at the radio station in their absence. A very confused Baze struggles with his feelings for Cate, and ends up hooking up with the hot new bartender, Paige, at his bar. Meanwhile, Lux and Bug find themselves at a major crossroads in their relationship.
When Cate and Baze are summoned to the principal's office at Lux's school, they are shocked to learn that Lux is failing and must make a drastic improvement in her grades or risk being kicked out. Meanwhile, after having the rug pulled out from under her at work, Cate starts the difficult process of looking for her next job, and in an effort to be a grown up, Baze decides to interview for a position at his father's firm.
Worried she may not pass an important exam that will help her stay in school, Lux contemplates buying the answers to the test from one of her classmates. Cate has an "interesting" day at the radio station after she accidentally eats banana bread laced with pot. Meanwhile, when a large sum of money is missing from Cate's wallet, Ryan and Cate argue over who may be responsible for taking the money.
In an effort to fix their hostile work relationship, Cate attempts to bond with Ryan's new on-air partner, Kelly, but the plan backfires when Kelly reveals a secret Cate has been hiding from Ryan. Meanwhile, Tasha returns to Portland unexpectedly and tells Lux that she is living with a new foster family, and Baze convinces a smitten Math to ask Paige out on a date.
This crossover episode of "Life Unexpected" brings "One Tree Hill" characters Haley and Mia to a music festival, sponsored by a Portland radio station and hosted by Ryan. At the concert, Haley and Cate meet and discover that they have incredibly similar pasts. It turns out that both women were somewhat nerdy, overachieving teenagers who got pregnant in high school by athletes named Nate (or Nathan). And when a secret of Cate's gets outed, Cate turns to Haley for advice.
Baze and Emma attempt to sign a high-profile client, Candy, who only has eyes for Baze. Lux goes to her homecoming dance hoping to see Eric but the evening takes an ugly turn for the worse. Cate explores Lux's past and is shocked at what she discovers.
When everyone ends up at Baze's loft for Thanksgiving, it isn't long before a few big secrets are exposed. Baze worries that his father, Jack, will discover he is dating his boss, Emma; Lux worries that her parents will find out she is spending time with Eric; Tasha worries that something very dark from her not-too-distant past will be discovered; and Cate worries that if she tells Ryan the truth it will further complicate their already complicated relationship.
If a judge decides to treat Tasha as an adult, and she is found guilty of assaulting Trey, she faces prison time. Trey's testimony is the key, so Lux threatens to tell the truth about the past unless he backs down. But what is the truth?
Baze plans to buy a house and asks Emma to move in. Cate keeps dwelling on Lux's past. Baze's news gets Lux to talk Eric into spending a night together. However, both Emma and Lux's secrets are just waiting to blow up.
While everyone's still dealing with the aftermath of secrets revealed, new revelations already happen, affecting their future. Reseolutions are needed. But the broadcaster has already canceled the show 1½ months earlier and this is the end.