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.

The Winter Formal comes up which means a lot of dates, trouble, and drama for everyone. For the couples already struggling, the burden might be too high.

Valentine's Day is coming up and nobody wants to be alone. Some present a new loved one, while others have to face the truth. But, not everyone spends the day as planned.

Everyone tries to forget something so a trip to the mountains shall help. So Kristin, Talan, Jessica, Alex H., and Jeff go to Mammoth.

Jason is in trouble because his love life is suddenly of interest to everybody since more and more people are getting involved. Things aren't easier with the upcoming bonfire.

It's Spring Break in Laguna Beach and everyone prepares to leave for Cabo, Mexico. Everyone? No. There is one person not willing to follow the herd. In Mexico, everyone hopes for a drama-free time, but of course someone has to ruin that dream.

After Cabo, things are even crazier than before and Kristin finds herself in the uncomfortable situation of a love triangle.

It's party time in Laguna Beach and once again Kristin in the middle of everything. Also, in San Francisco, things start to heat up.

The seniors' last prom comes up and everyone prepares for the big event. The boys try to find their dates and they have to find some creative ways to convince them. So what will the big event look like?

LC hosts a party for all the Laguna girls. Someone gets a new car and new couples go out in the world.

It's graduation day in Laguna Beach. The high school seniors see the end and reveal their plans for college. Even such a day of celebration holds a lot of surprises for many personal relationships.

The Laguna Beach kids organize a benefit party to help local victims of a landslide. But even there, the drama strikes hard, very hard.

The end of summer is near, so everyone is sad because they start to prepare to leave.

Things come to an end! Everyone leaves, couples and friends say a final goodbye. Laguna Beach would be what it is, when there wouldn't be a big surprise to the end.