“Wizards Beyond Waverly Place” premieres October 29 on Disney Channel and next day on Disney+. The series follows an adult Justin Russo, who has chosen to lead a normal, mortal life with his family, Giada, Roman and Milo. When Justin’s sister Alex brings Billie to his home seeking help, Justin realizes he must dust off his magical skills to mentor the wizard-in-training while also juggling his everyday responsibilities — and safeguarding the future of the Wizard World.