Jem and the Holograms #21 is the 21th issue of the Jem and the Holograms comic book, published by IDW Publishing. It was published on November 23rd, 2016. It features the third part of the five part story Enter The Stingers.
"Jem and The Holograms search for Shana's replacement as Shana gets everything she hoped for... but is it what she really wants? Meanwhile, somebody knows exactly what Shana wants - and that's gonna cause problems for everyone."
Shana and Regine are on their internship at Airò Zangiri Headquarters in Milan, Italy. Shana is having a bad day and calls home, but The Holograms and Fox are rehearsing Bad Bitten in their studio and do not hear the phone ring - The Holograms are going to perform at Five By Five Records' masquerade ball. Shana leaves a message on their answer machine, but Fox deletes it before the girls notice. Fox finds Emmett's jukebox under a sheet (which leads to Synergy's hidden mainframe room if a certain code is entered) - she presses buttons at random but the girls rush her away from it.
Pizzazz has a plan to infiltrate the Five By Five Records masquerade ball by disguising her and The Misfits as waitresses. In a bookstore cafe, Kimber tries to comfort Stormer, who is devastated that The Misfits have been dropped from their record label. Elsewhere, Raya has dinner with her father, and explains how she doesn't feel like she belongs.
At Riot's Penthouse, Minx and Rapture argue with Riot that he is becoming too obsessed with Jem, to the detriment of the band. At the Benton House, Fox eavesdrops on Kimber, Aja and Jem having a similar conversation. Fox overhears Aja questioning how she could cheat on Rio with riot, but Jem insists it's Jem dating Riot, not Jerrica. Aja points out that Jem is still Jerrica. They go into Jerrica's room, and Jerrica explains she's finding it harder to tell Jem and Jerrica apart anymore. They leave her to sleep, but Synergy appears, to explain that Fox has gone into their father's study, where she is trying to crack the code on the jukebox.