Kristin, Jessica and Alex H. are seniors now and plan on making the most of it, no matter who gets hurt. Especially if that includes Alex M., Taylor, Morgan S. and the new rumor queen Casey. Right away things are not like they used to be when everyone comes back for Christmas break. Lauren may be happy to see Stephen after she moved back to LB from San Fran, but Kristin makes it obvious that she and Stephen are dunzo. Even more obvious to everyone is that there's a new player in town: Jason. Well, obvious to everyone except his girlfriend Jessica.

Jessica worships Jason, but Alex H. and Kristin know he's bad news. In fact, Kristin thinks he's cheated on her, but can't prove it. Soon, she might not have to. Taylor and Alex M, who has an obvious crush on Jason, run into him and Talan and invite them to their poker party. What's a guy gonna do? There's only so much time in high school.

It's a birthday weekend in LB, but LC is splitting with Kaitlyn, Stephen and Dieter to celebrate in Mexico, while Alex H. and Jessica throw a dinner for Kristin. Kristin's only request? Taylor is not there. She got it, and also a call from Stephen and a little something started with Talan. But a Happy B-day turns to tears for LC when Stephen heads back to San Fran.

Things are heating up on Laguna Beach, so Jason, Talan and Cedric go surfing – giving Alex M. the chance for a flirtatious prank. Jason may like the extra attention she’s giving him, but Jessica doesn’t. Speaking of extra attention, Talan lays it on pretty thick with Kristin over lunch, but will Kristin finally give him her full attention? Yeah right.