Alex Russo brings a mischievous and exceptionally powerful student, Billie, to her brother Justin's home in the hopes of coaxing him out of retirement to teach her.

Billie's use of magic outside of the lair gets her in trouble with Justin, and her fear of being kicked out of yet another home bubbles to the surface.

On her first day of school, Billie uses magic to impress Roman's best friend. But when a jealous Roman steals Billie's wand, he falls into the grasp of a wizard-hunting phantomus!

On Halloween, Billie tells Roman about Pumpkin Belly, a ghoul who eats anyone whose house isn't spookily decorated. Meanwhile, Justin, Milo and Giada defend the home from pranksters.

Billie and Justin must work together to undo a spell when Billie's prank goes awry. Roman gains muscles thanks to a magical muscle tee. Milo's class pet gets loose in the house.

When Billie uses a spell on her BadgerBook profile and accidentally enchants her classmates, she must find a way to break it to get everyone back to normal!

Billie gets wizard help to finish her homework and meets a member of the Russo family. Justin runs into an old mentor while Billie uses magic on Roman's Homecoming parade float.

When her spell to remove Justin's wisdom teeth also removes all of his wisdom by mistake, Billie is left watching out for a reckless Justin.

When Billie struggles with a spell, Roman says he could do it if he was a wizard. To prove him wrong, Billie uses a Power Glass to transfer her powers to Roman.

When Billie's trouble-making friend from the wizard world visits, Billie goes over the top to impress her and accidentally puts Winter in danger.