Cody Simpson gives a big surprise to a fan in this still from a new episode of PrankStars.

In “Walk the Prank,” the 14-year-old Aussie singer invites his biggest fan, Emily, to come up on stage during a special acoustic concert. But Emily gets more than she bargained for when she learns that the performance is being broadcast live worldwide.

Zendaya also guest stars in the episode!

“Walk the Prank” airs on Friday, September 23 @ (8ET/PT) on Disney Channel.