A team of special effects artists transforms actor Jace Norman ("Henry Danger") into a completely unrecognizable substitute teacher who is ready to give students at Luther Burbank Middle School an unforgettable surprise.

Multitalented celebrity Lilly Singh goes under cover as a strange substitute teacher at Woodrow Wilson Middle School in Glendale, Calif., and pushes the students to their limits with her bizarre behavior.

Transformed by Hollywood special effects artists, John Cena pranks campers at the Boys & Girls Club of the Foothills; Cena goes under cover as a quirky environmentalist, a fearful fire safety expert, and a CPR instructor with an unusual best friend.

Grammy Award-winning performer Ne-Yo goes under cover and pranks middle school students; the crafty disguises include a master chef with a disastrous recipe for gingerbread cookies and eggnog, an out-of-control '90s rocker, and a quirky artist.

Using full costumes and prosthetics to hide her identity, WWE superstar Nikki Bella is transformed into three completely unrecognizable characters at Las Palmas Middle School in Covina, Calif., while sister Brie Bella directs from the control room.

Actor Rico Rodriguez goes under cover as a wacky neat freak, an intense karate instructor and a middle school sub, while his sister Raini Rodriguez pulls the strings behind the scenes.