Barbie, Tammy and all of Golden Beach High team up to defeat their rivals, Empire Coast High -- which tests Tammy's loyalties due to them being her old school.
On Halloween, after watching a scary vampire movie, Chelsea believes that Barbie is a vampire along with her friends and try's to destroy them.
When the Roberts go on a camping trip, Barbie makes brownies that no one can resist, but forbid anyone from eating them until the second night around the campfire, per family tradition. When someone eats the entire batch the night before though, the Roberts clan band together to figure out "whodunnit".
After the Roberts camper goes down and breaks, to get the money to replace it, Barbie and her sisters has to compete in game show that tears families down.
Barbie feels horrible when outside commitments keep her from taking Chelsea to her first circus, so Barbie decides to make up for it by putting on a circus at the Dreamhouse.
The Dudes & Trey get into a fight that results in the Dudes befriending Barbie instead. Without the Dudes, Trey finds a friend in Ken when they bond over a video game.
To get attention of the school, Tammy decides to imitate Barbie. When it goes too far, Barbie begins to feel deprived of her individuality. Meanwhile, Trey is struggling to find a gift for his mother. Also, Stacie and Chelsea agree to babysit a fashionable macaw, and end up losing him. The macaw lands up at the Reardons' home, and Trey's mother loves him. How will the Robert sisters get him back?
Just before a chemistry project presentation, Barbie falls ill. However, she doesn't want to take a day off and tries to figure out some way to attend the presentation without letting her project partners down. Meanwhile, Trey fakes an illness to play hooky, but runs into trouble when the principal catches him out of school.
Aunt Adele's inn is haunted by a ghost of a miner.
With a new ice rink in town, Barbie and her friends put on a show to promote it. However, Nikki gets hurt before the show, and their only choice for a replacement is a mysterious yet skillful chicken-masked ice skater.
Barbie and friends take the camper out to spend some quality time together.
It's Christmastime at the Roberts House, but not all is holly jolly. Barbie and Ken can't find the perfect gift for each other for Christmas, Stacie and Skipper take drastic measures to get a good gift for each other, and the whole family has to prevent Chelsea from finding and opening the presents before Christmas morning.
When Barbie, Teresa and Nikki are asked to write their school song, they learn a lesson in working out creative differences.