The Holograms try to fix up the old Opera House in order to keep it from being shut down, coming up with the idea to do a benefit concert on Halloween night. When scary things start happening, they wonder if it's a battle they can win.
Plot[]
It is the night before Halloween, and Jerrica, The Holograms and some of the Starlight Girls are watching a horror movie. They reach a scary part in the film, when Ashley and Krissie decide to scare the group. The girls find it hilarious, except for Terri, who appears to be terrified. Kimber tells Jerrica that Rio has arrived looking for Jem, and he offers to take the group on a late-night adventure. They learn that the old Opera House could possibly be sold to a new owner, since the original owner may not be able to pay off the back-taxes, which means there is a chance it could be torn down. They come up with the idea of a benefit concert to save the building, and the only way Rio would get his approval, is to meet him at the location at midnight.
The clock strikes twelve and the owner, famous horror movie star Frederick Vincent, appears. He explains that he lives in the building, until he can no longer afford to stay there. He gives the group permission to host a benefit concert and expresses his immense gratitude. That morning, everyone at the Starlight Mansion prepares for the concert by designing costumes and decorations. However, Ashley scares Terri so badly that she accidentally breaks her pumpkin and bursts into tears about how much she hates Halloween. Jerrica attempts to calm her down by singing that sometimes "It's Fun To Be Scared".
The Misfits discover the news about the benefit concert on the morning of Halloween, and immediately inform Eric and Techrat at the Rat Hole. Eric suggests they have their own Halloween concert to outdo The Holograms, while recommending the help of a man named Terrance Landau, who offers to finance their concert. They have a mutual agreement in wanting the benefit concert to be ruined, although for different reasons. Meanwhile, Jem and The Holograms prepare for the benefit concert by sprucing up the building with decorators and cleaners. They are in the middle of an interview with Lindsey Pierce, when The Misfits show up to announce their concert, claiming the Opera House to be unsafe.
Danse has agreed to do a routine for the concert to raise extra money, but the rehearsal takes a horrifying turn when one of the set props nearly collapses onto her, and they discover it was purposefully vandalized. Suddenly, Frederick appears to warn The Holograms that the building is filled with ghosts and evil spirits, in an attempt to make them leave. Jem refuses to give up, and instead allows an Inspector called in by Pizzazz to survey the building, who confirms that although everything looks to be safe, he would be back before the concert for a final checkup. The Misfits, disgruntled by The Holograms' good luck, discuss more ways they could get their competition in trouble - when they get spooked themselves. They perform "Don't Look Now", believing the place is actually haunted. Then, the chandelier drops from the ceiling, but The Holograms will not let their spirits be rattled. However, Jerrica points out that Frederick is intentionally trying to spoil the concert, which goes against everything they agreed.
It is time for both of the concerts, and the bands are dressed in their Halloween costumes. However, Jem and The Holograms experience a number of strange occurrences - a mummy appearing on their dressing room screen, echoes of laughter across the venue, and flashing lights. Terri is so frightened that she runs off, only to go missing in the building's secret passages. As Terri continues to run around underneath the building, she comes across Frederick , Techrat and Terrence with a special effects machine that seems to be causing the sounds and shakes in the Opera House. While trying to escape the trio, Terri discovers the real Frederick Vincent locked in a cell, who guides her back to safety after she helps him out. They meet up with The Holograms right as Jem is about to cancel the concert, and informs her of everything that took place. The guilty trio attempt to run, but Jem uses Synergy to conjure up some holographic ghosts.
Rio removes faux Frederick's mask, who actually turns out to be Eric, who only took part to leech off Terrence's money. The Misfits, aggravated by Eric, decide to head back to their concert, but the venue had been destroyed by an odd bolt of lightning. Jem and The Holograms perform "We Can Change It" to give their fans the most memorable Halloween concert, and afterward, Frederick thanks the group earnestly, now inspired to hold more entertainment at the Opera House.
The costumes The Misfits are seen wearing for their concert heavily resemble those from American rock band, Kiss, especially the designs the members used in 1976. Their apparels would correspond as follows:
The title of this episode is a pun to the traditional custom of trick-or-treating, where people (especially children) wear a costume on Halloween and visit various homes at night asking for candy.
