Selena Gomez dons a disguise to surprise a fan; Debby Ryan's biggest fan is asked to fire her from a fashion show; Mitchel Musso recruits a 15-year-old to stand in for his best friend.

China Anne McClain competes against her biggest fan, fourteen-year-old Sakoiya, for the chance to become a television game show host. However, the pressure is heightened when the game show's producer shows favoritism towards China Anne during the challenges. Meanwhile, when Adam Hicks loses his voice prior to an important radio interview, it is up to his unsuspecting "#1" fan, twelve-year-old Zak, to act as Hicks during the live interview.

Zendaya's family's new pirate-themed restaurant is short-staffed in the lead-up to an important restaurant review; Zendaya proceeds to enlist the help of an unsuspecting patron, eleven-year-old Jordan, to substitute as a "swashbuckling" waitress. However, a problem ensues after Jordan inadvertently upsets the food critic. Meanwhile, Cody Simpson invites his biggest fan, fourteen year-old Emily, to join him on stage during a special acoustic concert; however, Emily is unaware that the performance is a live global broadcast.

Due to difficulties with the composition of a song for a new video game device, Tiffany Thornton enlists the help of her "#1" fan, twelve year-old Darby, and they proceed to collaborate on the lyrics and use silly props to inspire the creative process. However, Darby's songwriting skills impress the producer and she is asked to write the entire song without Thornton. Meanwhile, Leo Howard's biggest fan, fourteen year-old Matt, is surprised to see Howard join him in a martial arts class that specializes in a fake form of karate, "Floating Swan". When Howard challenges the Sensei to a battle to decide which form is better—Floating Swan or "Kicking Panther"—Matt is recruited by Howard and receives a "crash course" in Kicking Panther prior to the battle.

Allstar Weekend meet fan Stephanie when she looks after the phones at a fake talent agency. Twins Abigaille and Emily meet idol Bridgit Mendler at a fake environmental ad campaign.

Raven-Symoné fan, Jade, meets her idol while looking after a dog. Summer attends a fake "flash mob" dance audition run by Bella Thorne.

Guest Stars: David Henrie , Stefanie Scott and Cole and Dylan Sprouse. Series Finale.